The tropical day is near to 12 hours as is the night. The nearer the equator, the closer it is to 12 hours per day and 12 hours per night.
72 legs A tropical fish has 72 legs
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 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.
Thousands.
There are many species of "Tropical Coral Reef Fish" that are commonly called "Butterfly Fish"
There are shark and tropical fish galore, but the Mahi mahi is the game fish of choice.
Crushed
Guppy's are popular tropical aquarium fish and don't have any legs.
Thousands of different tropical fish.
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 fish have adaptations such as bright colors for camouflage and attracting mates, streamlined body shapes for efficient swimming in warm waters, and specialized gills for extracting oxygen from low-oxygen environments. Additionally, some tropical fish have evolved unique behaviors to avoid predators or to find food in their specific habitat.
there are 18 hours of light in shara