: The Trawl Survey has captured channel catfish from waters with salinities as high as 20 parts per thousand. They inhabit all tributaries of Chesapeake Bay, and typically reach 60 cm (2 ft.) in length (although they have been reported to reach 100 cm (3.3 ft.)). The diet of channel catfish includes fishes and insects.
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Channel catfish (Ictalurus punctatus)
- This species first recruits to the survey gear in June.
- The Young-of-Year cutoff values are:
- June: 0-50 mm.
- July: 0-80 mm.
- August: 0-105 mm.
- September: 0-120 mm.
- October: 0-130 mm.
- November: 0-130 mm.
- December: 0-130 mm.
- January: 0-130 mm.
- February: 0-130 mm.
- March: 0-130 mm.
- April: 0-140 mm.
- May: 0-150 mm.
- YOY Index months are in bold.
- The YOY index is for Age 0 fish. The index is measured for the first four months of the calendar year following the actual year of spawning.
- Because channel catfish are restricted in their distribution, an index of abundance is calculated for each tributary. Only stations in the upper portions of the rivers are used.
- The Age 1+ index for this species contains several year classes. It may be possible to split out individual age groups in the future.
