Osmoregulation
Hyperosmotic regulation
osmoregulators that keep their body fluids more concentrated than their surroundings(e g FW fish)
Hyposmotic regulation: osmoregulators that keep their body more dilute than their surroundings(e.g. SW fish)
Euryhaline- animals that can cope with a broad range of salinities
Stenohaline: animals that cope with only a narrow range of salinities
Eury haline stenohaline
Osmoconformer Osmoregulator