Fish Breeding

well mine just started maknig his bubble nest 3 days ago and he's almost done.

it takes up one full coner of the tank.

Rainbow Sharks, which are freshwater fish, not real sharks, ARE egg layers, but rearly breed in captivity.

yes

There's now way to sex oscars. Oscars aren't able to breed until they are 2 years old. The male and female can live together. Oscar fry need to be removed or put into breeder box so they don't get eaten.

If it is a fantail betta, the boy will have very large, flowing fins. If it is a girl, the fins will be short and not very fancy.

12 weeks after mating

It depends upon the stage that the lake is in, as well as the depth. A bigger, deeper lake is capable of supporting larger fish, like sturgeon, pike and trout. Most lakes have some sort of waterfowl, northern ones will have loons, and nearly all will have herons, ducks, geese, swans, and some will have storks and/or cranes. Frogs, newts, salamanders, lots of amphibians. Probably at least a few types of watersnake, maybe a lizard or two if it's somewhere warmer. Turtles, crayfish, oysters, mussels, snails, tadpoles and a lot of insects in nearly any lake. Mammals too, beavers, otters, muskrats, things like that. All sorts of fish; in Michigan there are bluegill, sunfish, bass-bigmouth and smallmouth, perch, rockbass, dogfish, and then carp-invasive from China.

first make sure they are FEMALE. then put them in the same tank AFTER THE TANK HAD BEEN CLEANED. Watch them closely for a couple days and if they seem to be alright then just keep an eye on them. If they fight then you MUST SEPARATE THEM.

Yes, goldfish can breed in the home aquarium.

male and female got together and make young ones

Tigerfish hunt for fish, reptiles, geese, pelicans, and alabatrosses. A very large one can eat a small crocodile.