Hypsophrys nematopus, Poor man's tropheus

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Hypsophrys nematopus (Günther, 1867)

Poor man's tropheus
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> Cichliformes (Cichlids, convict blennies) > Cichlidae (Cichlids) > Cichlasomatinae
Etymology: Hypsophrys: Greek, hypsi = high + Greek, ophrys = eyebrow (Ref. 45335).
More on author: Günther.

Environment: milieu / climate zone / depth range / distribution range Ecologie

; zoet water demersaal; pH range: 7.0 - 8.0; dH range: 9 - 20. Tropical; 21°C - 34°C (Ref. 36880)

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Central America: Atlantic slope of Nicaragua and western Costa Rica, in the San Juan River drainage, including Lake Nicaragua and Lake Managua.

Grootte / Gewicht / Leeftijd

Maturity: Lm ?  range ? - ? cm
Max length : 14.0 cm SL mannelijk / geslacht onbekend; (Ref. 36377)

Korte beschrijving Morfologie | Morfometrie

Dorsale stekels (totaal): 18 - 19; Dorsale zachte stralen (totaal): 9-10; Anale stekels 7-8; Anale zachte stralen: 6 - 7. This species is distinguished by the following set of characters: teeth properly incisor, even in young; caudal edge of mesethmoid with a unique shape; caudal edge of supraoccipital crest straight, inclined rostrad, its height 27% of postethmoid skull length; width of posterior premaxillary expansion greater than 41% of length of the same bone; arms of articular equal in length; gut S-folded ventrorostrally in adults, anal and medial loops nearly touching; with an abrupt, steep head profile (Ref. 74403).

Biologie     Verklarende woordenlijst (bv. epibenthic)

Inhabits both lakes and rivers. Proliferates in rivers with medium to high velocities. Found between 35 and 535 m elevation (Ref. 36880). Feeds on aufwuchs which cover rocks and submersed trees and filaments of algae.

Levenscyclus en paargedrag Maturiteit | Voortplanting | Paaien | Eieren | Fecunditeit | Larven

Spawns in caves. During spawning both parents completely change their color.

Hoofdreferentie Upload your references | Referenties | Coördinator : Kullander, Sven O. | Medewerkers

Schmitter-Soto, J.J., 2007. A systematic revision of the genus Archocentrus (Perciformes: Cichlidae), with the description of two new genera and six new species. Zootaxa 1603:1-78. (Ref. 74403)

Status op de Rode Lijst van het IUCN (Ref. 130435)

  Gevoelig (NT) (B1ab(iii)); Date assessed: 30 July 2019

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Gevaar voor de mens

  Harmless





Gebruik door de mens

FAO - Publication: search | FishSource |

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Estimates based on models

Fylogenetische diversiteitsindex (Ref. 82804):  PD50 = 0.7500   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.02042 (0.00927 - 0.04498), b=3.11 (2.92 - 3.30), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
Trofisch niveau (Ref. 69278):  2.0   ±0.00 se; based on food items.
Weerstandsvermogen (Ref. 120179):  laag, minimale populatieverdubbelingstijd 4,5-14 jaar (Fec=50-60).
Fishing Vulnerability (Ref. 59153):  Low vulnerability (10 of 100).