Yes I have 3 in one tank
yes
To tarantulas cannot live in the same cage together. If you put two together they will fight and one will die.
no they are too territorial
No the two male bettas will kill each other if they are put in the same tank.
you can put two girl bettas in one tank but not the males
Yes, large enough tank and plenty of hidding spots. I have two in a 30x12x12, as long as you dont place a female with two males then they will fight over her
the girls will probley eat the baby you never know
If you wish to have two live Bettas you will have to keep them apart. Otherwise they will fight and one will kill the other.
I had two plecostomusses in the same tank and they did fine together.
Yes two Algae (a kind of primitive plant life) can be (develop) in the same tank. There is no reason why they should not.
It depends...... If you want them to mate, yes. If you love them both and don't want either one of them to die, no.
No they cannot, also if you put two Betta fish together, they will fight.