Classification / Names
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Cichliformes (Cichlids, convict blennies) >
Cichlidae (Cichlids) > Pseudocrenilabrinae
Etymology: Hemitaeniochromis: Greek, hemi = half + Latin, taenia, -ae = strip + Greek, chromis = a fish, perhaps a perch (Ref. 45335); brachyrhynchus: Latinized from the Greek adjective βραχύσ, short, and noun ρύγχοσ, snout, in reference to the abbreviated preocular region of the head; brachyrhynchus is a noun in apposition (Ref. 91204).
Environment: milieu / climate zone / distribuzione batimetrica / distribution range
Ecologia
; acqua dolce pelagico. Tropical
Africa: Lake Malawi (Ref. 91204).
Size / Peso / Age
Maturità: Lm ? range ? - ? cm
Max length : 124 cm SL maschio/sesso non determinato; (Ref. 91204)
Short description
Chiavi di identificazione | Morfologia | Morfometria
Spine dorsali (totale) : 17; Raggi dorsali molli (totale) : 10; Spine anali: 3; Raggi anali molli: 9. Diagnosis: Hemitaeniochromis brachyrhynchus is readily distinguished from its formal congener H. urotaenia, by its narrow lacrimal bone whose width, at the midpoint of the bone, is one-third of the orbit length, vs. nearly equal to the orbit length in H. urotaenia; by its snout being shorter than the orbit length, vs. longer in H. urotaenia; by its much larger eyes, the orbit length being about 36-38% of head length, vs. 22-28% in H. urotaenia; by its shorter lower jaw which is about 39-41% of head length, vs. 45-51% in H. urotaenia; and by its melanin pattern, which is composed of spots and line segments that are less well-defined than those of H. urotaenia (Ref. 91204). The narrow lacrimal and large eyes also distinguish H. brachyrhynchus from all other species that have sometimes been placed in Hemitaeniochromis (Ref. 91204).
Body shape (shape guide): fusiform / normal.
The distinctive lower-jaw teeth, with their outwardly and anteriorly angled crowns are similar to those of other haplochromine cichlids that have a paedophagous diet (Ref. 91204). The conservation status is unknown; it may normally inhabit deeper water than has generally been sampled over rocky substrates; and the widely separated localities of the two type specimens at least demonstrate that the species is not restricted to a single circumscribed area (Ref. 91204).
Life cycle and mating behavior
Maturità | Riproduzione | Deposizione | Uova | Fecundity | Larve
Oliver, M.K., 2012. Hemitaenichromis brachyrhynchus, a new species of cichlid fish from Lake Malaŵi, with comments on some other supposed members of the genus (Teleostei: Cichlidae). Zootaxa 3410:35-50. (Ref. 91204)
IUCN Red List Status (Ref. 130435: Version 2025-1)
Threat to humans
Harmless
Human uses
Pesca: di nessun interesse
Strumenti
Special reports
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Fonti Internet
Estimates based on models
Phylogenetic diversity index (Fonte Biblio.
82804): PD
50 = 0.7500 [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).
Trophic level (Fonte Biblio.
69278): 3.8 ±0.5 se; based on size and trophs of closest relatives
Resilienza (Fonte Biblio.
120179): Molto basso, tempo minimo di raddoppiamento della popolazione più di 14 anni (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Very high vulnerability (90 of 100).
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