With crayfish, the motto is 'eat or be eaten'. Crays will eat fish (and almost everything else, plants included!) small enough to catch, and practically everything else will predate the crayfish, at the very latest, when it molts. Very much a 'lose-lose' situation.
The only crays that can (with care!) do well in communities are the dwarf crays, such as the orange dwarf crayfish. These little crays are only about an inch long and do not disturb plants or adult fish, but they will still predate small snails and most shrimp, and are only slightly less vulnerable to predation than a similarly sized shrimp is.
The only crays that can (with care!) do well in communities are the dwarf crays, such as the orange dwarf crayfish. These little crays are only about an inch long and do not disturb plants or adult fish, but they will still predate small snails and most shrimp, and are only slightly less vulnerable to predation than a similarly sized shrimp is.
