User:NK1296/Gulf killifish

At 2 weeks post-hatch, Gulf killifish show reduced growth and survival in freshwater, but by 7 weeks old juvenile killifish have developed hypo-osmotic tolerance. At 7 weeks old juvenile killifish can live in freshwater ponds or tanks without reducing their growth rate. Gulf killifish develop an early ability to osmoregulate because they are born with functional gills and mature mouthparts.

Sentences will be in the “Salinity ranges” section before last sentence.