A perhaps interesting statistic is that this is there are now 244 undescribed species listed here as of Fall of 2025. For comparison Scheel's ROTOW listed "around 127" valid species. About 100 of these are Aphyosemion fishes in the broad sense.

Here's how they break down:

Breakdown by genus
Africa (total 243 species across 15–17 genera):
Aphy: 68
Call: 4
Chrm: 28
Epip: 18
Foer: 1
Fpx: 19
Lamp: 5
Fluv: 10
Hylo: 5
Hyps: 6
Lacu: 6
Micr: 6
Plat: 20
Poro: 6
Proc: 18
Noth: 25
Pach: 18 (counting both main and sub-variants like blue/red)

America (total 44 species across 7 genera):
Cyn_nov_1: 1
Hypso: 4
Moema: 10
Neof: 6
Rach: 6
Rivs: 10
Simp: 7


Jouke Vdz
"Richard, there are 8 described Hylo species and appr. 20 undescribed. Not cryptic species but obviously different in colour pattern and DNA. At least 30 undescribed Plataplochilus species, 99% of Procatopus similis pictures are undescribed species, etc. Biodiversity underestimated. There are quite a few undescribed Epiplatys species. So far not many undescribed Aphyosemion species, but many in DRC (predominantly museum collections)."