Well, he's old enough to breed.
His behavior is consistent with having eggs or fry.
If you can't see in with a flashlight, do you have one of those $1.00 laser pointers? That beam should allow a peek in the cave. If want to, you can gently shift the cave to get a peek inside or just wait another week or two. Fry will come out when they are hungry.
His behavior is consistent with having eggs or fry.
If you can't see in with a flashlight, do you have one of those $1.00 laser pointers? That beam should allow a peek in the cave. If want to, you can gently shift the cave to get a peek inside or just wait another week or two. Fry will come out when they are hungry.