2007-06-04 13:18:24 · 4 answers · asked by Anonymous in Pets ➔ Fish
What do you consider the "groups"? Barb's answer is a good one if you're looking at this from the scientific classification of fish (ie biology homework).
If you're looking at this as tank environments (freshwater, saltwater, and brackish), that's another thing!
Freshwater fish would incluse barbs, tetras, goldfish, koi, bettas, and others.
Marine fish would be clownfish/damsels, groupers, wrasses, lionfish, and others.
Brackish fish would be scats, Monodactylus, archerfish, and some others.
Some families have members that live in each environment (there are freshwater, marine, and brackish pufferfish for instance), and some fish (mollies, guppies) can live in all three environments.
2007-06-04 20:43:03 · answer #1 · answered by copperhead 7 · 1⤊ 0⤋
How fish reproduce person fish incredibly reproduce (make babies) interior the comparable way because of the fact the better animals: the female produces eggs and the male produces sperm. Egg and sperm integrate to offer a clean man or woman, containing genetic textile from the two mothers and fathers. besides the fact that, the considerable factors of fish duplicate are multiple. Eggs could be fertilised the two externally or internally, reckoning on species. additionally, some species of marine fish have the two lady and male reproductive organs. How chickens lay eggs A healthful chicken will lay approximately one egg an afternoon. A chicken would not want a chicken to place eggs and eggs are produced in accordance with day mild types. The eggs we purchase interior the shop are no longer fertilized (they don’t hatch). the size of the egg is dependant on the age of the chicken. Older birds lay better eggs.
2016-11-25 23:09:52 · answer #2 · answered by ? 4 · 0⤊ 0⤋
Super Agnatha Group - lampreys and hagfish (this is the most primitive with no moving mouth)
Chondrychthes - sharks, rays (this group was the first to develop jaws) The name means cartilegenous as their skeletons are made of cartilege.
Osteichthyes - catfish, sturgeon. The name ostei is obviously bone. These were the first classification of fish with bones and jaws.
2007-06-04 13:28:45 · answer #3 · answered by Barb R 5 · 1⤊ 0⤋
Go with barbs answer, shes right on for this one.
2007-06-04 14:30:04 · answer #4 · answered by greenhat1981 3 · 0⤊ 0⤋