I have an extra 20 gallon sitting around, and I was wondering, couldnt I put it outside and breed my harlequin rasboras? I have heard of several cases where people keep tropical fish outdoors in the summer to breed them. However I am not completely clear on the subject.
1) Should I use a heater to mantain the temperature? I live close to Sacramento where it is constanlty hot in the summer, so not much chanch of it getting too cold. However, would a heater keep the fish happier at a constant temp, or will these variations trigger spawning.
2) Keep the babies outside? I realize that natrally occuring food is one of the reasons people keep babies outside, but does that outway any flucuations that could occur?
3) Shade? Should I keep the tank in the shade where it is still warm, have it hit direct sunlight, or what.
4) The rasboras are currently in a community 29 gallon, and there are about 8 of them. I can see I have both males and females (larger females with rounder bellies). What are reccomendations on sex ratios, as well as prompting them to breed. I have seen that they naturally breed on the underside of broadleaved plants, so I was thinking of putting a single amazon swordplant in the tank. How does that sound?
5) What filtration would be best? I realize that if I keep the babies in the tank I will use a sponge filter, but if a just have the parents out there and remove the eggs, would a HOB
or sponge work better for them.
5) Lastly, any other advice, personal experiance to give.
Thank you very much for any advice.