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Bield:Fish
Single-region spawn timing

Blue Catfish spawn timing in Midwest Rivers and Natural Lakes.

Ictalurus furcatusLate May – Late July

Mississippi and Missouri rivers peak June.

Calendar & temperature

JanJan — Outside spawn windowFebFeb — Outside spawn windowMarMar — Outside spawn windowAprApr — Pre-spawn — water rising toward 70°FMayMay — Peak spawn (75–80°F)JunJun — Peak spawn (75–80°F)JulJul — Peak spawn (75–80°F)AugAug — Post-spawn — water at 84°F+SepSep — Outside spawn windowOctOct — Outside spawn windowNovNov — Outside spawn windowDecDec — Outside spawn window
Typical window: Late May – Late July
32°37°42°47°52°57°62°67°72°77°82°87°Peak 75–80°F
Pre-spawn — best fishingPeak spawn — conservationPost-spawn — recovery feeding·Dashed line = peak spawn boundaries

Phase-by-phase

Pre-Spawn

Trophy fishing window
65–70°F

Pre-spawn blue cats move from deep channels to shallower cavity structure areas as temperatures rise through high 60s.

Cut bait fishing in deep structure areas produces pre-spawn blue cats; trophy fishing window peaks in May.

Spawn

Conservation window
70–84°F (peak 75–80°F)

Active spawning behavior. Cavity spawners with male parental care, similar to channel and flathead cats.

Blue catfish populations have expanded in some Eastern systems where they are non-native (Chesapeake Bay tributaries). Some agencies actively encourage harvest there. In native range, trophy fish (60+

Conservation context

Blue catfish populations have expanded in some Eastern systems where they are non-native (Chesapeake Bay tributaries). Some agencies actively encourage harvest there. In native range, trophy fish (60+ lbs) deserve C&R consideration.

Post-Spawn

Recovery feeding
84–92°F (~14 days)

Males guard cavity nests; females depart immediately. Post-spawn females feed aggressively at deep structure.

Mid-summer blue cat fishing is among the best of the year as post-spawn fish recover and feed heavily.

Summer Pattern

Standard patterns
Above 92°F

Fish disperse to summer habitat and feeding patterns. Spawn cycle complete until following year.

Standard summer fishing tactics apply.

Full Blue Catfish spawn guide →Full Midwest Rivers and Natural Lakes spawn calendar →