There is a bit of a debate about keeping thumbnails in groups or pairs. If it's a true group (5+ animals) and relatively even in sexes there tend to not be too much trouble if in a large enough tank with enough breeding, calling, and tadpole deposition spots. In these cases, there may actually be more success breeding than if the group was seperated into pairs because animals get to pick their preferred mates, fertility of eggs may be increased due to egg piracy (a male other than the one that bred with the female may sneak in and give it a go), and increased competition (possibly giving more attention to the eggs and young to make sure the other animals don't get involved in a negative way tho I don't have any experience that supports this and I believe the other two reasons are more true). It's also easier to grow the groups of plants they like... like clumps of broms... in a larger tank, were a small 10g vert (erk, always do the biggest you can afford, but this is what a lot of people use) may only be able to hold the smallest species like a fireball (but not a clump) where a larger tank not only supports a larger type of brom they might like better, but also support the clumps of broms that they also prefer.
In other cases, pairs may be more successful... it's easier to keep track of individual animals, it may be easier/cheaper for the keeper to keep the pairs in the smallest minimal space than devote the space/money to the larger tank. It's easier to find eggs to pull them (if that's your goal, with vents I'd let them do all the work so you aren't overloaded with tadpoles that take forever to morph) in the smaller tanks with pairs.
|
