i Register
In some senses, crabfish is marked as archaic. Watch for register when choosing this word.
noun
A freshwater crab found in Southern European rivers, streams, and lakes, Potamon fluviatile or Cancer fluviatilis.
Cancer fluviatilis, River crabfish, The ashes of these fishes (as Galen saith) are of wonderfull vertue, by the propertie of their substance, against the biting of a mad dogge.
A lobster or crayfish.