Fishpeople are a race from Slayers.
Fishpeople have human arms and legs, but the bodies of fish. They can breathe in or out of water, and have 360-degree vision. They reproduce by laying eggs. The fishman Noonsa demonstrated the ability to fire spines from his dorsal fin, but it is not known if all fishpeople possess this ability. Lina Inverse describes fishpeople as disgusting and horrifying in The Ruby Eye, but that may just be personal prejudice.
Fishpeople have been seen both inside and outside of the mazoku barrier.