Félix Losantos (1967–2020).

Malumbres, F.J., Sonnenberg, R. & Van der Zee, J.R. 2022.

Three new killifish species (Cyprinodontiformes: Nothobranchiidae) from Equatorial Guinea.

Graellsia, 78(2): e173. https://doi.org/10.3989/graellsia.2022.v78.346

Holotype male - 31mm SL. The original description states sizes of paratypes up to 37·9mm but just states '1 male & 2 females'.

• Aphyosemion maculatum – American Killifish Association, no date.
• Aphyosemion maculatum – Castelo, 1994. — Huber, 2007.

Populations

• GEMPG 18-20 (Type locality)
• GEGVPO 18-5
• GEMLBJ 03-3
• Bisun
• Bisum

Equatorial Guinea, Centro Sur province, affluent of Rio Nfogoyi, a left bank tributary of Rio Wele, 100 metres west of the village of Bisun, 1º43´43.5´´N, 10º17´29.4´´E. Collected on 5 December 2018 by F. Malumbres, J. G. Povez, and D. González (from original description).

Known from a stretch of 6 kilometers north and south from Bisun along the road from Niefang to Bicurga in central Equatorial Guinea. It is not unlikely, however, that it also occurs east and west of the present distribution area, since no collections were made there. North and south of the distribution area several collections were made, but M losantosi was not found (from original description).

A small creek in humid forest, slowly running, slightly amber coloured clear water, close to source, water 15 cm deep and 1 m wide, loamy soil covered with leaves, pH 6.0, conductivity 0.5 Microsiemens, water temperature 23.9 ºC (from original description).

Reportedly requires clean soft water (rainwater). Temperature should not exceed 26°C.

This species is part of the genus Mesoaphyosemion.