If by passive you mean community fish, then there are many different types. Usually passive fish are small, and not highly territorial. In the pet trade some common families that are considered passive or community are the tetras, live bearers, gouramis, loaches, plecos, rainbowfish, some barbs, and many others.
yes there are different types of gills in different types of fishes.
The two different types of sonar are passive and active.
There are many many different types of fish that form shoals.
There are seven types of passive voices 1 General Passive 2 Modal Passive 3 Journalistic Passive 4 Double object Passive 5 + ing Passive 6 + going to Passive 7 + want to Passive By H.K.Dalugama hkdalugama@yahoo.com
According to the Oxford English Dictionary, the noun fish has has two plural forms, fish or fishes. Fishes is generally used when referring to different types or breeds of fish.
Direct agglutination Passive agglutination Reverse passive agglutination
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There are many Fishes in the Philippines because the Philippines is surrounded by water and the Phillippines is an archepelago so, there are many different kinds of fishes in the Philippines.
According to the Oxford English Dictionary, the noun fish has has two plural forms, fish or fishes. Fishes is generally used when referring to different types or breeds of fish.
blow fish
Jelly fishes
Seal