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Aphyosemion bitteri Valdesalici & Eberl, 2016

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drawing shows typical species in Nothobranchiidae.


Gabon country information

Common names: [No common name]
Occurrence: endemic
Salinity: freshwater
Abundance: | Ref:
Importance: | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: live export: yes;
Comments: Type locality of the holotype of Aphyosemion bitteri: 'Gabon, Province de la Ngounié, Département de Tsamba-Magotsi, 1 km west of Ikobey, Route Régionale 22 to Sindara, a small stream named Dondo belonging to the Ikoy River system (01°02.986'S, 10°58.726'E)' (Ref. 116793). Known from Ikoy River basin (Ref. 116793).
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/gb.html
National Fisheries Authority:
Occurrences: Occurrences Point map
Main Ref: Valdesalici, S. and W. Eberl, 2016
National Database:

Common names from other countries

Classification / Names Tên thường gặp | Các synonym ( Các tên trùng) | Catalog of Fishes(Giống, Các loài) | ITIS | CoL | WoRMS | Cloffa

> Cyprinodontiformes (Rivulines, killifishes and live bearers) > Nothobranchiidae (African rivulines)
Etymology: Aphyosemion: Greek, aphye, -es, sardine, anchovy + Greek, semeion = mark, signal (Ref. 45335);  bitteri: The new species is dedicated to Friedrich Bitter, German killifish hobbyist and member of the DKG (German Killifish Association), for his contribution to the knowledge on African killifishes (Ref. 116793).

Environment: milieu / climate zone / depth range / distribution range Sinh thái học

; Nước ngọt Sống nổi và đáy.   Tropical

Sự phân bố Các nước | Các khu vực của FAO | Các hệ sinh thái | Những lần xuất hiện | Point map | Những chỉ dẫn | Faunafri

Africa: Ikoy River basin in Gabon (Ref. 116793).

Bộ gần gũi / Khối lượng (Trọng lượng) / Age

Maturity: Lm ?  range ? - ? cm
Max length : 2.9 cm SL con đực/không giới tính; (Ref. 116793)

Short description Khóa để định loại | Hình thái học | Sinh trắc học

Các tia vây lưng cứng (tổng cộng) : 0; Các vây lưng mềm (tổng cộng) : 9 - 10; Tia cứng vây hậu môn: 0; Tia mềm vây hậu môn: 11 - 12. Diagnosis: Males of Aphyosemion bitteri can be distinguished from all other congeners by presenting a maze-like red pattern on the caudal fin; they also differ from all the other species of the genus, except members of the A. grelli species group, by having the basal two thirds of the unpaired fins of females yellow, and the marginal third greyish (Ref. 116793). Males of A. bitteri can be easily distinguished from males of A. grelli by a denser red pigmentation on the flanks consisting of four parallel horizontal lines becoming wider posteriorly, vs. two or three parallel horizontal lines of isolated red dots; by the dense red pigmentation of the unpaired fins, consisting of four horizontal bands on the dorsal fin, undulating coalescent red lines parallel to the fin rays on the caudal fin, and three horizontal red lines on the anal fin, sometimes coalescent and in some specimens forming a pattern similar to that of the caudal fin, vs. no red pigmentation on the unpaired fins or a few isolated red dots on the central part of the caudal; by having more scales in the circumpeduncular series in both sexes, 13-14 vs. 12; less anal fin rays, 11-12 vs. 13-14; and interrupted neuromast series in the median longitudinal series, vs. neuromast series in the median longitudinal series complete (Ref. 116793). Males of A. bitteri can be easily distinguished from A. mengilai by the dense red pigmentation of the unpaired fins, vs. sparse red pigmentation; by the continuous parallel horizontal red lines on the caudal peduncle wider than the interspaces, vs. interrupted red lines consisting of short series of small dots, in some cases forming a reticulated pattern; by having less dorsal and anal fin rays in both sexes, 9-10 vs. 13-14 and 11-12 vs. 15-16, respectively; by less scales around the caudal peduncle, 13-14 vs. 15-18; by less scales in the transverse series, 9-10 vs. 11-12; by interrupted neuromast series in the median longitudinal series, vs. neuromast series in the median longitudinal series complete; and by a distinct maximum standard length, with A. bitteri attaining less than 30 mm standard length versus more than 40 mm standard length for A. mengilai (Ref. 116793). Males of A. bitteri can be easily distinguished from males of A. escherichi, known from the same geographical area, by a dense red pigmentation on the flanks, consisting of four parallel horizontal lines becoming wider posteriorly which are as wide as the interspaces and fade into the red pigmentation of the caudal fin, vs. three to four very regular parallel horizontal lines of coalescent red dots with the interspaces wider than the lines ending at the posterior edge of the caudal peduncle; by the narrow dark grey dorsal and ventral margins of the unpaired fins, vs. yellowish and wider with red submarginal bands; and by the red pigmentation of the unpaired fins, forming a maze-like pattern, vs. numerous isolated red dots on the median part of the caudal and the basal two thirds of the anal fin (Ref. 116793).

Sinh học     Tự điển (thí dụ epibenthic)

Found in a stream not wider than 60 cm and not deeper than 20 cm; no aquatic vegetation was present; only freshwater shrimps, tadpoles, and aquatic insects were present (Ref. 116793).

Life cycle and mating behavior Maturities | Sự tái sinh sản | Spawnings | Egg(s) | Fecundities | Ấu trùng

Main reference Upload your references | Các tài liệu tham khảo | Người điều phối | Người cộng tác

Valdesalici, S. and W. Eberl, 2016. Aphyosemion bitteri (Cyprinodontiformes: Nothobranchiidae), a new killifish species from the northern Massif du Chaillu, Gabon. aqua, Int. J. Ichthyol. 22(2):61-68. (Ref. 116793)

IUCN Red List Status (Ref. 130435)


CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless




Human uses

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Estimates based on models

Phylogenetic diversity index (Ref. 82804):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01000 (0.00244 - 0.04107), b=3.04 (2.81 - 3.27), in cm Total Length, based on all LWR estimates for this body shape (Ref. 93245).
Mức dinh dưỡng (Ref. 69278):  3.1   ±0.4 se; based on size and trophs of closest relatives
Fishing Vulnerability (Ref. 59153):  Low vulnerability (10 of 100).