well i got him giving today when i went to collect my sevs
placing fish with Cray is fraught with problems. however Cray that hunt and eat fish, are both rare and, usually, a product of ignorant feeding regimes.
remember the critter is not a carnivore, rather preferring rotting veg and the like. they do need protein, but sparingly. they need it to be around 30% of their diet. if you have lots of place for it to hide, you should have no problems.
i would feel its the Cray at risk, in your tank. during the moult, they are very vulnerable. an attack, or even a visit (from a fish) at this time. could set up a chain of events, leading to an attack, by the Cray, on your fish. this is, of course, if the fish don't kill the Cray, first.
If you are going to keep both together, a mature Cray (like yours) is the best option. but its also best to know the Cray history. keeping immature Cray with fish. often ends up, with the Cray turning killer.
Remember though this is not a function of it being a Crayfish. more a problem of incorrect husbandry, whilst young.
not sure it will be of help but.............
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