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I have bred a number of these fish and as they grow their spot seems to come and go depending on their juvie coloration verses adult coloration. I have not seen any connection to sex. I look more at the length and shape of Dorsal | Anal fins, body shape and behavior.
The photo you submitted is a regular Macmasteri. The gold form looks a lot different. She's very similar to your male, but with less colors and of course, smaller size as would any macmasteri female be.
The actual fault for mistaken identity is not always the LFS, either, I have seen many times that the incorrect fish arrive although ordered correctly on paper. I bought 30 mascara barbs (D. asimilis) only to find out a few days after I got home that they were rohani barbs (D. rohani). The...
Oh, sorry. Not in condition to sex the first two photos. But I was at the LFS today and they had two tanks of Apistogramma viejita and they looked just like macmasteri to me. I'm not sure of the difference so will have to do more investigation.
I was not trying to be funny. I was merely mentioning that over the years (especially with Discus and some other cichlids) all of the evidence may point to male and then one day suddenly the fish lays eggs. Well, that's happened to me before. So while I can assume a fish is a male, if it lays...
If the fish lays eggs, then it's definitely a female. If there's no eggs laid and the tube (ovipositor) that protrudes typically when a female is in condition isn't present, then it could be a male. However from the photos you present and they are only two and both basically the same view...
I would say that they are two males as well. I am breeding them myself and find that the females are about 1/3 the size of the males and look completely different. Here's a link to a video of mine that shows a female with her fry. Notice the dark band through the eye, and a shorter dorsal...
I agree with MacZ. You can call it whatever you would like. Even more, MacZ's recommendation is a good one. You don't know what you have until you've been breeding from it and see the offspring. Only then do you know what you have. But to answer your last question. I wouldn't call it a...
You have a very intriguing question. I see them as "Dark Rams", "Dark Knight Rams", Black Rams, Midnight Rams, Blue-Black Rams and there's probably quite a few out there. I believe that the Rams that we are seeing are resultant of many people crossing their rams from the fixed Black ram strain...
Just my opinion, but it does not look like fungus to me. I could be wrong, but the stuff you are describing in the tank and in the photos is more like a type of algae which is in itself not going to be causing eggs to go white. I would suspect that the white eggs may be from an entirely...
Hi. Nice photos to work with, so thanks for sending those. In the black spot area, it's obvious missing a lot of the blueish iridescent spots that are all over the body. This also suggests a male. The females tend to have spots evenly distributed through this area while the males do not...