EVERYDAY SCIENCE

Detailed explanation-1: -Important group of egg-layers are barbs, rasboras, goldfish, tetras, danios, betas, angelfish and gouramis.

Detailed explanation-2: -The mola, or ocean sunfish, looks like an animal cracker someone bit in half. At 5, 000 pounds, though, this temperate and tropical water animal is the world’s heaviest bony fish. It’s also the heavyweight egg producer, releasing 300 million eggs over a spawning season.

Detailed explanation-3: -Fish reproduce by bearing live young or by laying eggs. Livebearers give birth to fully formed and functional young called fry. The eggs are fertilized and hatch within the female.

Detailed explanation-4: -Multiple Spawnings Sometimes if the water temperature stays warm long enough, the fish will spawn more than once. In warmer climates outdoor goldfish might spawn two or three times a season. In aquariums, if the water temperature remains pretty much the same, they may spawn all year long.