12 in
The catfish that live in the pacific northwest get fairly big. The average size of these catfish ranges between a total of 40 and 50 pounds. These are also known as Channel catfish.
Channel catfish have ancestry links from many river systems
There are no size restriction for keeping saltwater catfish in Florida but be warned, they are not as good on the dinner table as freshwater catfish so I have been told.
The channel catfish.
Channel catfish (Ictalurus punctatus) is a freshwater species.
The Channel Catfish (Ictalurus punctatus) is a fresh water fish exclusively.
First you are naming 3 different species,BlueChannelShovelhead/FlatheadCatfish are scavengers and if the shovel is small enough and the channel is big/hungry enough I would say Yes.www.southernohiopaylakes.proboards.comHope this helps
a tank with a filter make sre the tank is big because the fish can get up to 4 feet big
The channel catfish.
May
they are eaten
It depends how big your Koi is and how big the Catfish is. If the catfish can fit in the Koi's mouth than it will get eaten.