To list all the different species that can be mixed (kept) together would require an encyclopedia. There are literally thousands. A few suggestions of species could include most Danios, Rasboras, Barbs, Tetras, Anabantids, Dwarf Cichlids, Corydoras, Botias. etc etc.
101
yes there are different types of gills in different types of fishes.
blow fish
Jelly fishes
Seal
small fishes................
350 500 or 200
tuna fish
Butterfly fish eat certain types of coral.
Manatee! :) My favorite kind of friend.
no mostly big fishes are found in seas only small fishes present in dams.
Dear Sirs , are you asking about types (species ) of threatened fishes in IRAQ , or about the methods which are used by fishermen or public that threaten fishes in IRAQ. THANK YOU FOR ASKING THIS QUESTION..... IWILL ANSWER AFTER YOUR REPLY .... FISHERIES EXPERT FROM IRAQ