Guppies ,mollies ,neon tetra, etc. about 3 each.
There are many different species but I can say that they will all be "Tropical fish"
72 legs A tropical fish has 72 legs
It depends on what kind of fish they are; tropical fish will reproduce many times in a year, whereas many temperate species will only do so once a year.
Not all tropical fish even lay eggs, guppies, platys, and swordtails are good example of livebearer tropical fish. So the number of eggs a tropical fish lays cannot be determined.
Tropical and brackish are not mutually exclusive. Tropical means warm, and brackish means somewhat salty. Many brackish fish ARE tropical, and many tropical fish are brackish. You can keep tropical brackish fish with other tropical brackish fish, if they have the same temperment and will not harm or eat eachother. You can keep some brackish fish with some freshwater tropicals, and similarly you can keep some brackish fish with some marine tropicals. There are no wide open set of principles for brackish fish compatability beyond those that I have just illustrated.
There are so very many species of tropical fish it would be impossible to produce a single chart to do what you request. There are however many good books that you may be able to obtain either by purchase from a pet shop or borrow from a library.
7....But you should keep an good watch on them.
There are many tropical fish on the link i posted that should help if you click on the name you will also get a picture of what the fish looks like. Hope i could help.
They can eat many different fish that are mashed up really good.
There are many species of "Tropical Coral Reef Fish" that are commonly called "Butterfly Fish"
Thousands.
There are shark and tropical fish galore, but the Mahi mahi is the game fish of choice.