Classification / Names
Common names | Synonyms | Catalog of Fishes(genus, species) | ITIS | CoL | WoRMS | Cloffa
Teleostei (teleosts) >
Cyprinodontiformes (Rivulines, killifishes and live bearers) >
Procatopodidae (African lampeyes) > Procatopodinae
Etymology: Hylopanchax: Greek, hylo, hyle = material, wood + Panchax, a word created by Meinken in 1932; thysi: The name thysi is in honour of Dirk Thys van den Audenaerde in recognition of his outstanding contributions to our knowledge on African ichthyology as well as for the many expeditions and resulting collections he made in Africa (Ref. 123864).
Eponymy: Professor Dr Dirk Frans Elisabeth Thys van den Audenerde (d: 1934) is a Belgian ichthyologist and Museum Director. [...] (Ref. 128868), visit book page.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Freshwater; pelagic. Tropical
Africa: Ivindo River drainage, a right-bank affluent of the Ogowe River basin, in Gabon (Ref. 123864).
Size / Weight / Age
Maturity: Lm ? range ? - ? cm
Max length : 2.3 cm SL male/unsexed; (Ref. 123864); 1.9 cm SL (female)
Short description
Identification keys | Morphology | Morphometrics
Dorsal spines (total): 0; Dorsal soft rays (total): 7 - 8; Anal spines: 0; Anal soft rays: 15 - 17; Vertebrae: 30. Diagnosis: Hylopanchax thysi is distinguished from all other Hylopanchax species, except H. paucisquamatus, by the presence of 30 vertebrae vs. 31-33 (Ref. 123864). It is further distinguished from H. paucisquamatus and all congeners except H. multisquamatus by the presence of a hyaline urogenital male papilla with small black spots vs. black, and the presence of a conspicuous reticulate pattern in the flank of both males and females vs. absence or less conspicuous; finally, H. thysi is distinguished from H. multisquamatus by a male caudal peduncle depth-length ratio between 53-59% vs. 40-45%, 24-26 scales in the midlongitudinal series vs. 27-30, 13-14 pectoral-fin rays vs. 11-12, body depth 25.2-27.8% of standard length vs. 20.0-23.7%, female predorsal length between 62.0-64.0% of standard length vs. 66.0-74.8%, and female prepelvic length of 33.7-38.0% of standard length vs. 42.1-45.1% (Ref. 123864).
Found in shallow creeks (Ref. 123864).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Bragança, P.H.N., J.R. van der Zee, R. Sonnenberg and E.J.W.M.N. Vreven, 2021. Description of two new miniature species of Hylopanchax Poll & Lambert, 1965 (Cypriniformes: Procatopodidae) from northeastern Gabon, with an updated diagnosis of the genus based on morphology, colouration and osteology. J. Fish Biol. 98(3):655-667. (Ref. 123864)
IUCN Red List Status (Ref. 130435: Version 2024-1)
Threat to humans
Harmless
Human uses
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Internet sources
Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = No PD50 data [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01122 (0.00514 - 0.02450), b=3.04 (2.87 - 3.21), in cm total length, based on all LWR estimates for this body shape (Ref.
93245).
Trophic level (Ref.
69278): 3.1 ±0.4 se; based on size and trophs of closest relatives
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
