Know Ohio’s 28-Inch and 35-Inch Catfish Rules Before Keeping a Trophy
Ohio’s catfish rules are based primarily on species and fish length. Smaller channel, blue and flathead catfish have no statewide daily harvest limit, but the rules change immediately when a channel catfish reaches 28 inches or a blue or flathead reaches 35 inches.
This practical guide explains the license requirement, species identification, trophy-fish limits, Ohio River complications and legal rod, trotline, bankline and jug-fishing methods.
Do You Need a Special License to Catch Catfish in Ohio?
Most residents and nonresidents age 16 or older need a valid Ohio fishing license to fish for channel, blue or flathead catfish in Ohio public waters.
Ohio does not list a separate recreational catfish stamp. A standard catfish trip normally requires the appropriate base fishing license, followed by compliance with statewide, Ohio River, site-specific and fishing-method regulations.
Children younger than 16 generally do not need a license. They must still follow the same catfish length thresholds, large-fish limits, legal-method rules and property-access requirements.
Complete These Four Checks Before Setting a Line
Verify the license
Confirm age, residency, active dates and accepted proof before fishing.
Name the exact water
Separate inland water, Lake Erie District and Ohio River boundary rules.
Identify the species
Use tail shape and anal-fin shape rather than body color alone.
Measure before keeping
Use the 28-inch channel threshold and 35-inch blue or flathead threshold.
Which Ohio Catfish Fishing License Do You Need?
Is the angler younger than 16?
An Ohio fishing license is generally not required, but harvest and fishing-method rules still apply.
Is the angler an Ohio resident age 16 or older?
Choose an eligible resident one-day, one-year, multiyear, senior or lifetime product.
Does the angler live outside Ohio?
Choose a nonresident one-day, three-day or one-year fishing license.
Are you using a trotline in the Lake Erie Fishing District?
A special trotline license is required in addition to the normal fishing-license analysis.
Are you entering private property or using a private dock?
A fishing license does not provide permission to trespass, park or attach gear on private property.
Digital proof is accepted
Ohio allows fishing licenses to be displayed on a mobile device. Save the license image offline and carry identification so a weak signal does not interrupt the trip.
Ohio Catfish Fishing License Costs
| License product | Current fee | Best use | Important check |
|---|---|---|---|
| Ohio resident one-day fishing license | $14.00 | One catfish trip | Confirm the active date |
| Resident one-year upgrade from one-day license | $12.00 | Eligible angler deciding to fish more often | Follow the official upgrade process |
| Ohio resident one-year fishing license | $25.00 | Repeat river, lake and reservoir trips | Valid for 365 days from purchase |
| Ohio resident three-year fishing license | $72.11 | Regular Ohio anglers | Verify account identity before payment |
| Ohio resident senior one-year license | $10.00 | Eligible Ohio residents age 65 or older | Confirm senior residency eligibility |
| Nonresident one-day fishing license | $27.04 | One Ohio catfish day | Compare with the three-day product |
| Nonresident three-day fishing license | $52.00 | A long fishing weekend | Select the correct starting date |
| Nonresident one-year fishing license | $76.96 | Repeat Ohio visits | Compare against several short-term purchases |
| Separate recreational catfish stamp | Not listed | Standard catfish fishing uses the base license | Special gear licenses may still apply |
How to Buy an Ohio Catfish Fishing License
-
Count every planned fishing day.
Include nighttime sessions that continue past midnight and any additional Ohio water you may visit. -
Confirm residency and age.
Do not select resident or senior pricing unless the angler meets Ohio’s current eligibility requirements. -
Open the official Ohio licensing system.
Use Wild Ohio, HuntFish OH or an authorized license-sales agent. -
Use the correct customer account.
Enter the angler’s legal name, birth date and required identification details accurately. -
Select the base fishing product.
Choose the one-day, three-day, annual, multiyear, senior or lifetime product matching the trip. -
Review the dates and final price.
Verify the active date, expiration date, residency category and total charge before payment. -
Save license proof offline.
Keep a digital image and consider carrying a printed backup. -
Open the catfish regulation table separately.
Buying a license does not complete the species, length, location or fishing-method check.
Official Ohio fishing license page
Why use this link: ODNR publishes current license products, exemptions, fees and purchase methods.
After opening: review the exemption list, choose the correct residency category and follow the official buying instructions.
Open official Ohio license informationOhio Channel, Blue and Flathead Catfish Limits
These are Ohio’s statewide rules where no stricter Ohio River, Lake Erie or site-specific regulation applies.
Under 28 inches
Daily limit: No statewide limit
Minimum size: None
28 inches or longer
Daily limit: One statewide
Threshold: 28 inches
35 inches or longer
Daily limit: One blue and one flathead statewide
Threshold: 35 inches
| Catfish category | Daily limit | Minimum-size rule | Practical interpretation |
|---|---|---|---|
| Channel catfish under 28 inches | No statewide limit | No minimum | Check the exact water for a stricter posted or site-specific rule |
| Channel catfish 28 inches or longer | One statewide | 28-inch threshold | Changing lakes or rivers does not restart the large-channel limit |
| Blue catfish under 35 inches | No statewide limit | No minimum | Species identification is critical because channels use a different threshold |
| Blue catfish 35 inches or longer | One statewide | 35-inch threshold | The one-large-blue allowance is separate from the flathead allowance |
| Flathead catfish under 35 inches | No statewide limit | No minimum | Verify site-specific and consumption guidance before harvesting many fish |
| Flathead catfish 35 inches or longer | One statewide | 35-inch threshold | The one-large-flathead allowance is separate from the blue allowance |
How to Measure an Ohio Catfish Correctly
-
Place the fish on a firm measuring board.
A flexible tape can curve around the body and create an inaccurate measurement. -
Close the fish’s mouth.
Start at the farthest forward point of the closed mouth. -
Lay the fish flat without stretching it.
Do not pull the head and tail in opposite directions. -
Compress the tail fin.
Bring the tail lobes together for total-length measurement. -
Read the farthest tail point.
Measure to the longest point of the compressed tail. -
Treat the threshold as reached when uncertain.
If a channel appears to be 28 inches or a blue or flathead appears to be 35 inches, use the large-fish rule unless a reliable measurement proves otherwise.
Use a rigid board
A long bump board is easier and safer for trophy catfish than a short ruler or soft sewing tape.
Photograph the measurement
A clear photo can document the fish, board position and final length before release or harvest.
Record the species
Write down channel, blue or flathead rather than recording every catch simply as “catfish.”
How to Identify Channel, Blue and Flathead Catfish
Channel Catfish
- Deeply forked tail
- Curved outer edge of the anal fin
- Usually 24 to 30 anal-fin rays
- Young fish commonly have dark body spots
- Color may range from silver or gray to nearly black
Common mistake: assuming every dark, fork-tailed catfish is a blue catfish.
Blue Catfish
- Deeply forked tail
- Long, straighter-edged anal fin
- Usually 30 to 36 anal-fin rays
- Typically lacks the channel catfish’s dark spots
- Body often appears slate blue, gray or silvery
Best identifier: compare the shape and ray count of the anal fin rather than relying only on blue coloration.
Flathead Catfish
- Tail is rounded or nearly square, not deeply forked
- Broad, flattened head
- Lower jaw projects beyond the upper jaw
- Mottled brown, olive or yellowish coloration
- Shorter, rounded anal fin
Fast identifier: a large catfish with a broad head and nonforked tail is usually a flathead.
Where to Find Channel, Blue and Flathead Catfish in Ohio
Channel Catfish
Channel catfish occur throughout Ohio and are stocked in many public lakes and ponds. They also inhabit reservoirs, rivers and larger streams.
Useful water types
- Public fishing lakes
- Reservoir flats and channels
- Farm ponds with permission
- River holes and current seams
- Accessible community fishing waters
Blue Catfish
Ohio’s primary blue-catfish opportunity is associated with large rivers, particularly the Ohio River, along with selected managed reservoirs such as Hoover Reservoir.
Useful habitat
- Deep river channels
- Dam tailwaters outside restricted zones
- Current breaks and ledges
- Large reservoir basins
- Areas holding schools of forage fish
Flathead Catfish
Flatheads are found in Ohio rivers and reservoirs, often near deep holes, submerged timber, rock cover and other heavy structure.
Useful habitat
- Logjams and submerged trees
- Deep outside river bends
- Rock ledges and riprap
- Reservoir creek channels
- Low-light feeding areas
Ohio River
Research this water for channel, blue and flathead catfish, but review boundary-unit rules before launching.
Hoover Reservoir
ODNR identifies Hoover as a strong central Ohio option for channel, blue and flathead catfish.
Inland reservoirs
Many Ohio reservoirs support channel and flathead catfish, but access, motor and gear rules vary.
Public streams
Streams may offer catfish and legal alternate-method opportunities, subject to local access and water-specific restrictions.
Use the Interactive Ohio Lake Fishing Map
Why use it: the official map helps anglers locate public lakes, ramps, depth information, fish habitat and fishing details.
After opening: select a lake, look for catfish information and verify access, boat restrictions and site-specific rules.
Open the official Ohio fishing mapOhio River Catfish License and Regulation Rules
The Ohio River is divided into western and eastern agreement units. The applicable rule can depend on the angler’s license, boat position, shoreline and neighboring state.
| Situation | Primary rule to check | Why it matters | Practical action |
|---|---|---|---|
| Boat angler in the Ohio–Kentucky Western Unit | Rules of the state by which the boat angler is licensed, unless a unified rule is listed | Not every species rule is unified | Carry the correct license and review both state boundaries |
| Angler fishing from the Ohio bank in the Western Unit | Ohio fishing regulations | The shoreline location controls | Remain on legal public access and follow Ohio catfish rules |
| Ohio or West Virginia resident on the Eastern Unit main stem | Reciprocal-license agreement may apply | Ohio and West Virginia honor each other’s resident licenses in defined border areas | Confirm the exact boundary and eligible residency |
| Boat angler fishing West Virginia water in the Eastern Unit | West Virginia regulations | Boat position can change the controlling regulation | Review West Virginia catfish limits before crossing |
| Tributary or embayment near the Ohio River | Unit agreement may extend to a landmark, first riffle or dam | The boundary is not always the tributary mouth | Use the official agreement map or contact ODNR |
Legal Ohio Catfish Fishing Methods
Rod and Reel
- Maximum of three fishing lines statewide
- Follow local hook and seasonal restrictions
- Keep lines under active control
- Check dam and restricted-area signs
Trotlines
- Maximum three trotlines in one Inland District water
- Maximum 50 hooks per trotline
- Must be anchored and labeled
- Check at least once every 24 hours
- Not within 1,000 feet downstream of a dam
Banklines or Setlines
- Maximum 50 lines overall
- One single hook per line
- No treble hooks
- Label every line
- Check once every 24 hours
Floatlines or Jugs
- Float must be freely adrift
- Angler must attend it at all times
- One single hook, not a treble
- Float must be labeled
- No glass or shatterable float
Trotline requirements anglers often miss
Identification and construction
- Name and address or customer identification number must be attached
- Trotline must be anchored
- Wire or cable cannot be used as the trotline
- The line cannot be removable merely by pulling it from shore
Location restrictions
- Trotlines may be used only in listed streams and approved lake sections
- Do not set within 1,000 feet downstream of a dam
- Check water-specific channel and launch restrictions
- Remove equipment after use
Bankline and setline attachment rules
Each line must be attached to the shore above water. It may not be attached to a boat, dam, dock, pier, pole, fishing rod or wall. Public waters under 700 surface acres allow no more than six banklines or setlines.
Floatline and jug-fishing limits
No more than six floatlines may be used in Ohio public waters under 700 surface acres. Floatline or jug fishing is permitted in streams and other listed public waters unless prohibited by the owner or authority controlling the water.
Ohio Catfish Bait and Cast-Net Rules
Purchased or common bait
Nightcrawlers, prepared catfish bait and legally obtained cut bait may be useful, but the source and possession of baitfish must comply with Ohio rules.
Cast nets
Cast nets may take forage fish and minnows. Catfish or other nonforage fish captured in the net must be released immediately and unharmed.
Dam restrictions
Cast-net use may be prohibited within 1,000 feet downstream of a dam where Division of Wildlife signs identify the restriction.
| Cast-net feature | Ohio requirement | Practical check |
|---|---|---|
| Net diameter | No greater than 10 feet | Measure the manufacturer’s stated diameter |
| Square mesh | At least one-quarter inch and no larger than one inch on a side | Measure mesh from knot to knot as instructed |
| Fish that may be retained | Forage fish and minnows | Release catfish and other nonforage fish immediately |
| Dam proximity | Observe posted 1,000-foot downstream restrictions | Look for ODNR signs before throwing the net |
How to Handle and Release a Trophy Ohio Catfish
-
Prepare the landing area before lifting the fish.
Wet the measuring board or padded mat and remove loose hooks, tools and sharp objects. -
Support the fish horizontally.
Use one hand near the head and another under the body. Do not suspend a large catfish only by the jaw. -
Keep the fish out of water briefly.
Measure, photograph and return it without a long photo session. -
Protect the slime coat.
Avoid dry pavement, gravel, carpet and rough boat surfaces. -
Remove the hook carefully.
Use long pliers or cut the leader when deep hook removal would cause additional injury. -
Revive the fish facing current.
Hold it upright until it maintains balance and swims away under its own power.
Fish Ohio Award Sizes for Catfish
| Species | Fish Ohio qualifying length | Large-fish harvest threshold | Important distinction |
|---|---|---|---|
| Channel catfish | 26 inches | 28 inches | A 26- or 27-inch channel may qualify for the award without entering the 28-inch large-fish category |
| Blue catfish | 35 inches | 35 inches | A qualifying blue also enters the one-large-blue statewide category |
| Flathead catfish | 35 inches | 35 inches | A qualifying flathead also enters the one-large-flathead statewide category |
Check Ohio Fish-Consumption Advice Before Eating Catfish
Ohio’s general recommendation is no more than one meal per week of most Ohio sport fish unless a more specific waterbody or species advisory applies.
Search the exact water
An advisory may apply to one river section, reservoir or contaminant source rather than the entire state.
Check species and size
Larger, older fish may accumulate more contaminants. Do not assume a legal trophy is automatically the best table fish.
Consider the person eating it
Children, pregnant people and other sensitive groups may have more protective meal recommendations.
Ohio Catfish Fishing Trip Checklist
License
- Active fishing license
- Correct residency category
- Photo identification
- Offline license image
Measurement
- Long rigid measuring board
- 28-inch channel rule saved
- 35-inch blue and flathead rule saved
- Catch log ready
Fishing method
- Legal number of lines
- Required line labels
- Single hooks where required
- Twenty-four-hour checks planned
Safety
- Life jacket near deep water
- Headlamp and backup light
- Weather and river level checked
- Return time shared
Access
- Public access verified
- Legal parking confirmed
- Dam restriction checked
- Private permission saved
Fish handling
- Landing net
- Long hook-removal pliers
- Wet protective mat
- Cut-resistant gloves if needed
Harvest
- Consumption advisory checked
- Cooler and ice prepared
- Each angler’s fish separated
- Large-fish count tracked
Offline files
- Regulation PDF
- River or lake map
- Fish identification guide
- Emergency contacts
Ohio Division of Wildlife Catfish Regulation Contacts
Division of Wildlife customer service
wildinfo@dnr.ohio.gov
2045 Morse Road, Building G
Columbus, OH 43229
License sales and publication pickup are not available at this location.
Sandusky Fisheries Research Unit
305 East Shoreline Drive
Sandusky, OH 44870
419-625-8062
Official Ohio Catfish Fishing Resources
2026–27 Ohio Fishing Regulations
Use it for: statewide catfish limits, license information, Ohio River units, trotlines, banklines and floatlines.
After opening: review statewide regulations on page 6, Ohio River rules on pages 8–9 and other methods on pages 14–15.
Open the official regulation bookletOhio fishing license information
Use it for: current fees, residency, exemptions and official purchasing options.
After opening: identify the correct product before entering payment information.
View official license informationSport Fish of Ohio identification guide
Use it for: comparing channel, blue, flathead and other Ohio fish species.
After opening: compare tail shape, anal fin, jaw position and body markings.
Open the official fish guideInteractive Ohio Lake Fishing Map
Use it for: finding lakes, boat ramps, fishing information, structure and public access.
After opening: select a lake and review the catfish, depth and access layers.
Open the fishing mapOhio fish-stocking records
Use it for: checking public channel-catfish and blue-catfish stocking history by water and year.
After opening: select the species, location and year range rather than relying on an old fishing report.
Search official stocking recordsOhio sport-fish consumption advisory
Use it for: meal-frequency recommendations by water, species and contaminant.
After opening: search the exact river, reservoir or lake where the fish was caught.
Check fish-consumption guidanceFish Ohio recognition program
Use it for: reporting qualifying channel, blue and flathead catfish.
After opening: review the entry deadline, legal-angling requirement and qualifying lengths.
Review the Fish Ohio programWildlife customer service
Use it for: uncertain Ohio River boundaries, site-specific limits, legal-method questions and county-officer routing.
After opening: provide the exact water, access point, gear and target species.
Contact Ohio Wildlife staffOhio Catfish Fishing License FAQs
Do I need an Ohio fishing license to catch catfish?
Most residents and nonresidents age 16 or older need a valid Ohio fishing license to fish for channel, blue or flathead catfish in Ohio public waters. A specific exemption may apply in limited situations.
Does Ohio require a separate catfish stamp?
Ohio does not list a separate recreational catfish stamp. Most anglers need the appropriate base fishing license, although a special trotline license is required for trotline use in the Lake Erie Fishing District.
What is the Ohio channel catfish daily limit?
Channel catfish under 28 inches have no statewide daily limit where no stricter rule applies. An angler may keep only one channel catfish measuring 28 inches or longer statewide per day.
What is the Ohio blue catfish daily limit?
Blue catfish under 35 inches have no statewide daily limit where no stricter rule applies. An angler may keep only one blue catfish measuring 35 inches or longer statewide per day.
What is the Ohio flathead catfish daily limit?
Flathead catfish under 35 inches have no statewide daily limit where no stricter rule applies. An angler may keep only one flathead catfish measuring 35 inches or longer statewide per day.
How do I measure an Ohio catfish?
Measure total length with the fish’s mouth closed and the tail fin compressed. Use a rigid board and measure from the farthest forward point of the closed mouth to the farthest point of the compressed tail.
Can I use three fishing rods for catfish in Ohio?
Ohio’s current regulations permit a maximum of three fishing lines statewide, including counties within the Ohio River fishing units. Local or seasonal single-hook rules may still apply.
Is jug fishing legal for catfish in Ohio?
Floatline or jug fishing is legal in listed Ohio waters and other public waters unless prohibited by the controlling authority. Floats must be labeled, freely adrift, attended at all times and equipped with one single hook rather than a treble hook.
Do I need a special license for an Ohio trotline?
A normal fishing license is generally part of the requirement where a license is required. A separate special trotline license is specifically required for trotline use in the Lake Erie Fishing District.
Do Ohio catfish rules apply everywhere on the Ohio River?
Not automatically. The Ohio River has western and eastern agreement units, and the applicable regulation may depend on the angler’s license, boat position, shoreline, tributary boundary and neighboring state.
Editorial verification: Ohio fishing-license fees, statewide channel, blue and flathead catfish limits, Ohio River agreement guidance, legal-line limits, trotline requirements, bankline rules, floatline rules, Fish Ohio sizes, consumption guidance and official contact details were reviewed on July 31, 2026.
Independent information notice: OhioFishingLicense.website is an independent informational resource and is not operated by the Ohio Department of Natural Resources or Ohio Department of Health. Current regulations, emergency rules, posted signs and official agency instructions control.