I have a 120 Gallon aquarium with sand. They love it.
Maybe. It depends on the tank conditions. They can breed in the tank but the female will not lay eggs in the water so if you are wanting them to breed, you'll need to make an area so the female can get out of the water and into sand to bury her eggs. If your female does lay the eggs in water they will most likely die unless you remove them within 2 hours and place them into a heated place in the same position you found them. From my experience I have not been able to hatch any eggs. My female has a land area with sand and a lamp yet she always hatches them in the water and by the time I see the eggs they are unhatchable.
If you attempt to breed Bettas splendens in a 1 gallon tank you are doomed to fail. Sorry. The minimum sized tank to breed Bettas in successfully is around 10 gallons.
If other fishes are present in your tank, then it may not be a good idea for the skin of the sand dollar will begin to rot and spoil the tank. So first remove the sand dollar dry it in the sun and clean it with bleach. Then you can decorate your fish tank with the cleaned sand dollar.
Yes.
No. Unless you put it in a tank with sand.
only to breed
leave them in the tank for a while they will eventually
yes
put a male and a female in the same tank
to breed them you have to have them in a EXTREMELY clean ten gallon tank to your reasearch.>:(
Yes. Livebearers will breed anywhere under nearly any condition.
Yes, the sugar will remain on the bottom of the tank like sand.