> This correspongs with observations I have made in nature (although with
> other fish than rainbows). The fry are much more often found in the
> shallow, much warmer water at the shores of lakes and rivers than the
> adults which were in the free water. Remember G. multisquamatus
> laying eggs in flooding areas. The water temperatures for the hatching
> fry in the very shallow water of the flooding area is surely higher than
> in the middle river.
That can work both ways depending upon where you are. Shallow water is
subject to higher temperature fluctuations either hot or cold.
> However, generally you shouldn't keep your bows at too high temperatures.
> We almost anytime have too high temperatures in our aquaria. 24°C are
> enough for adults - and M. herbertaxelrodi e.g. shouldn't be kept and most
> of all bred with temperatures higher than 22°C as otherways you will have
> chiefly males in the offspring.
Better not tell the herbies that I have bred in the past. I bred them at
26oC and never had a problem with sex ratios.
Hooboo
Peter