yes. do not consider them humans. they are lower than piss.
if just FISH, then yes.
FISH HUMANS, though, are vermin. they are indecisive bastards who can't convict enough to turn into mermen/mermaids and are doomed to remain as useless appendages flailing helplessly away in their off court. they can't let go of their land autonomous traits but aren't willing to let go of the traits of being a sea creature. plagued by their selfishness, they could only sink to the bottom of the ocean while their gills keep them from ever mortally escaping from their punishment. they can only eat the remains of stolen prey. their main diet is seabed sand and fish shit and piss.