Some species don't get too large (8-10") whilst others (Channa Micropeltes etc) get up to a metre in length. Funnily enough, despite the 'reputation' of Snakeheads the smaller species are really quite timid creatures that enjoy being kept in a small (3-5) group and need a heavily planted tank for security. They can also be among the most beautifully coloured and marked of fish.... with plenty of character!
Channa Bleheri
Channa Obscura
Channa Orientalis
Channa Bleheri
Channa Obscura
Channa Orientalis