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The only person I personally knew who did this was Dr. Fontaine Weyman. He was an interesting (=eccentric) Southern gentleman who supplied most of the domestic bred apistos back in the 1960/70s. I did it by accident once. I definitely don't recommend it. There are 2 exceptions that I would try...
None of the tetra species listed are ideal with a pair of apistos that potentially will breed. Black Neons are reportedly less predatory, but all will try. So the question is not which tetra but do I want a breeding tank or a community tank. It's almost impossible to have it both ways in such a...
I agree with MacZ, probably a male but it is not A. hongsloi. It is one of the other many species within the hongsloi-complex. Without knowing where it was collected it is hard to say which species it actually is.
I've only collected during the dry season. I've seen larger cichlid species brooding fry. As for apistos, well, our seines did not capture such small fish, but did collect females in brood dress.
Make sure these are water temperature and not the air temperature. It also is helpful to know at what depth the water temperature was measured and the season, as MacZ wrote. Most temperatures are measured during the dry season when water is slightly warmer. Also water temperature will vary after...
See: U. Römer, W. Beisenherz. 1996. Environmental determination of sex in Apistogrammai (Cichlidae) and two other freshwater fishes (Teleostei). J. Fish Biol. 48(4): 714-725.
Also note that water temps vary with depth and overhead cover. Römer found that the more dominant females seek out...
Any pencilfish (genus Nannostomus only) except possibly N. beckfordi, which have been reported to eat apisto fry should be OK. My personal favorite is N. marginatus.
It will 'get your feet wet' (literally). Such trips have several advantages including they eliminate the headache of shipping fish home. The disadvantage? Well they go where they want to go and collect fish that you might not be interested in. As for Go Wild Peru Tours, they have their...
Yes, "fry theft" is fairly common among A. borellii, especially between females. This instinct is so strong in this species that they have been know to brood fry of other apisto species - and even fry of dwarf pikes!
The are several geographic populations of L. dorsigera. They look quite similar when not in breeding colors. Breeding color can vary from deep burgundy to sooty black, like yours do.
To me the "female" looks disturbingly like a young or sneaker male. But as mentioned before females of domestic strains can show many masculine characteristics.
Per Römer & Beißenherz's study 26°C for 6 weeks produced 50/50 sex ratio for A. borellii. I would use it. A. borellii is/are a species found in the Pantanal grasslands of South America and are not a rain forest species. As such they adapt easily to a wide range of temperatures.
Good new for you. "South American Dwarf Cichlids (Datz Special Publication in German & English)" doesn't need a translation since it contains both German and English text. I can provide a free (no cost!) electronic tanslation of "Die Buntbarsche Amerikas - Apistogramma & Co." to you once you let...