the hump u cant do anything about it la i think... its natural..

as for breeeding, i breed a few times adi..
u will need a few times to get the experience

there will be some fail project, like the eggs become bad coz the male dint put the "ahem" on it

or the male or the female eat the eggs.

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if u really wana breed.
get a bigger tank.

separate the male and the female wif a glass in the middle of the tank
if urr tank got sand, then u can see tat if she is going to mate soon, she will use her mouth to transfer the sand to other parts of the tank and make a hole in there, usually laying the eggs on the glass floor.

if u dun have sands, u cant see whether she is ready or not,
so u got to monitor when she is going to lay eggs.
anyway when she is going to lay eggs, will have something like penis
come out of her abdomen, the eggs will come out from there.

after she lay the eggs adi, u can take off the glass tat separates the male and the female. usually they wont fight after the the eggs are being lay.

and the reason of the glass separator is for them to be familiar wif each other so tat they wont fight.

after that there is nothing u can do, juz monitor them see got fight or not.?
if no after the male put its "ahem" on the eggs.

i will turn into fry soon, u can see a bunch of it circling the female soon.
next u need to be careful, if the parents fight usually the fry wont survive.

usually for me la, i will take away the male, and let the female lead the fry.

u can take away the female when the fry is like 10 cent coin, or mayb sooner depends.

its very very fun when the fry reach that size.
i like to put a lump of red worm and put my hands into the tank,
hundreds of fry will come and eat the worms very cute

hehe, hope u understand my rojak english