Lake Tanganyika Species • Is this Neolamprologus tetracanthus?

[tangyanaspirant]

The LFS is selling these as "blue line cichlid" for about 11 bucks. They appear to be Neolamprologus tetracanthus, however there is a stark difference in the dark outer fin color vs the yellow outer color I'm seeing in most pictures. And the body/spots seem slightly different color though the light is probably different. Any ideas? I'm looking for something to try and breed in a 29. these guys I have a feeling get quite big even though I don't know what they are. Hopefully going to find some smaller tang. options , but it's limited in my area

[DJRansome]

They look like Paracyprichromis Nigripinnis to me, except for tail which does look more like the tetracanthus. Why not ask the vendor to confirm the scientific name?

[Mr Chromedome]

I have had tetracanthus at a young age, checked a photo in my files, it was a perfect match for these fish. I think the dorsal color changes as they get older, but those are definitely young Neolamprologus tetracanthus. I looked at some photos of the Paracyprichromis nigripinnis, and I cannot imagine any confusion between the two species.

[sir_keith]

They look like Paracyprichromis Nigripinnis to me...

Nope.

...those are definitely young Neolamprologus tetracanthus...

Yup. Probably just a local variant with a bit more color. No way these are going to fit into a 29.