Type of Frontosa are these?

[Mfkjr75]

Any idea what these ones are? Ended up buying them from my lfs.

 

[deeda]

Milingu will help with I.D.

 

[neutrino]

They're Cyphotilapia frontosa, in other words the more common and usually somewhat less colorful northern species-- which doesn't mean they're not nice fish. It does fool some people when they see the blue fins on juveniles, but it's evident by the solid eye bar as opposed to the varying mask of the southern species C. gibberosa (which includes mpimbwe, moba, etc.). Often called Burundi frontosa, though their range in the lake goes beyond Burundi. Typical lfs 'Burundi' frontosa can have more blue at that size, then typically lose some of it as adults, though some of them, depending on catch location, how close to wild, etc, can turn out more colorful than others.

A few out there still calli them species North, but it's an outdated term that was never official in the first place. It was suggested years ago, after the southern fish became C. gibberosa, when some hobbyists thought the 6 stripe northern fish would be made a third species and separated from the 7 striped frontosa (found at Kigoma and another location or two), but it never happened. Taxonomists decided the 6 bar and 7 bar northern fish were the same species, making just the two species, with superficial differences between catch locations of each species-- for example, mask and color differ a bit between Tanzanian and Congo gibberosa.

 

[neutrino]

...To get a bit more technical, Ad Konings never liked gibberosa being classified as a second speces, but:

New Species of Cyphotilapia (Perciformes: Cichlidae) from Lake Tanganyika, Africa (bioone.org)

A second species of Cyphotilapia (Cichlidae) is described from Lake Tanganyika. The new species is clearly distinct from Cyphotilapia frontosa in having three scale rows between the upper and lower lateral lines at center of body (vs two rows in C. frontosa). Furthermore, a greater number of scales on the longitudinal line (34–36 vs 33–35), fewer outer teeth on the upper jaw (31–52 vs 39–62), higher body (43.3–51.2% SL vs 38.2–46.5%), longer predorsal (37.5–44.9% SL vs 37.1–42.7% SL), longer dorsal-fin base (57.1–64.6% SL vs 53.8–60.9% SL) and longer pectoral fin (36.0–47.2% SL vs 31.3–41.7%) also distinguish the former species. The distribution of the new species is restricted to the southern half of Lake Tanganyika, whereas C. frontosa is allopatrically distributed in the northern half of the lake.

And as I mentioned above, the name species North was invented by hobbyists, but this was never official and a third species never came to be:
Six- and seven-banded frontosa are same species - Practical Fishkeeping

 

[Milingu]

Milingu will help with I.D.

They're Cyphotilapia frontosa, in other words the more common and usually somewhat less colorful northern species-- which doesn't mean they're not nice fish. It does fool some people when they see the blue fins on juveniles, but it's evident by the solid eye bar as opposed to the varying mask of the southern species C. gibberosa (which includes mpimbwe, moba, etc.). Often called Burundi frontosa, though their range in the lake goes beyond Burundi. Typical lfs 'Burundi' frontosa can have more blue at that size, then typically lose some of it as adults, though some of them, depending on catch location, how close to wild, etc, can turn out more colorful than others.

A few out there still calli them species North, but it's an outdated term that was never official in the first place. It was suggested years ago, after the southern fish became C. gibberosa, when some hobbyists thought the 6 stripe northern fish would be made a third species and separated from the 7 striped frontosa (found at Kigoma and another location or two), but it never happened. Taxonomists decided the 6 bar and 7 bar northern fish were the same species, making just the two species, with superficial differences between catch locations of each species-- for example, mask and color differ a bit between Tanzanian and Congo gibberosa.

Neutrino nailed it.

 

[Mfkjr75]

Thank you, I do appreciate the info.