A little more than one year ago, I began breeding Ancistrus, (Albino L144). That has been going well. I've also been raising breeding groups of the longfin variety and a calico variety, and those are close to breeding age/size.
Now I would like to pursue keeping and breeding of a slightly more challenging species, so I'm asking for suggestions. If it can work out, I would like to shoot for the following traits, IF POSSIBLE, in my next species:
>>I'm not interested in raising the Common Pl*cos that my LFS has, in abundance. I don't know their scientific name, but I think you'll all know which ones I'm talking about.
>>If possible, I would prefer a 'smaller' species. I realize that 'smaller' is a relative term.
>>My preference is that no tank bigger than a 20-gallon-long would be required. That size of tank equates to approx. 76 liters. The dimensions are approx. 30" x 12" x 12", or approx. 76cm x 31 cm x 31cm.
>>I have RO water available, and my well water is of good quality, hard, with a ph of 7.9 to 8.0. I can blend the two, if needed, or use RO water and add a commercial buffer product to it, if that would be required.
>>If it's not asking too much, I would be extra pleased if the species that I pursue could have some cool-looking pattern or markings on it.
>>Although I don't mind a challenge, since this would be my second species, I'm hoping for one that would not be OVERLY-difficult to keep and breed.
>>Finally, I'm prepared to lay out some cash for the intial fry/breeding stock/breeders, but I'd prefer to not have to sell my home, in order to raise the money to buy these fish.

If any of you can suggest a species that fits these criteria, I would surely appreciate your recommendation(s). I hope my expectations aren't unreasonable. Thank you, in advance.
Cheers, everyone!
Aquafinatic