Very nice! Excellent images.
- Certainly a
Metynnis - Long (broad) adipose fin.
[Caveat: Silver dollar specimens in aquaria (i.e, no benefit of classical ichthyological characters such as scale counts, and ray numbers) are notoriously difficult to ascertain]
- The specimen at center is a male, in reproductive display coloration. The specimen at left (only posterior part visible) is another male of same species.
- The specimen at center showing only the eye and the anal fin is a female and may or not be the same species (additional images needed)
- Altogether, the male at center in my opinnion can only be one of 3 species: Metynnis altidorsalis, M. lippincotianus, or M. maculatus.
- I believe most likelly it is M. altidorsalis, the same as a male specimen I have (pictures attached, albeit not in breeding coloration). In my specimen the black ringing the causal and adipose fins, and spotting the dorsal, are not seen in the picture attached, but the specimen does show them in and on/off basis, mood depending. I also have specimens of what I believe are maculatus and lippincotianus.
- I stress, the female may or not be the same species as the other two specimens. A full photo would very nice.
Very nice pick! Thanks for sharing.