Ptychochromis insolitus  Stiassny & Sparks, 2006

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Ptychochromis insolitus
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Classification / Names Noms communs | Synonymes | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

Actinoptérygiens (poissons à nageoires rayonnées) > Perciformes (Perch-likes) > Cichlidae (Cichlids) > Ptychochrominae
Etymology: Ptychochromis: Greek, ptyx, = fold + Greek, chromis = a fish, perhaps a perch (Ref. 45335);  insolitus: Name derived from the Latin, insolitus, meaning 'unusual, odd, queer', in reference to the somewhat atypical appearance of the species and the anomalous morphology of the aquarium raised specimens used for the original description (Ref. 57663).

Environnement / Climat / Gamme Écologie

; eau douce démersal.   Tropical, preferred ?

Distribution Pays | Zones FAO | Écosystèmes | Occurrences | Point map | Introductions | Faunafri

Africa: Madagascar (Ref. 57663).

Taille / Poids / Âge

Maturity: Lm ?  range ? - ? cm
Max length : 5.5 cm SL mâle / non sexé; (Ref. 57663)

Description synthétique Morphologie | Morphométrie

Épines dorsales (Total): 13; Rayons mous dorsaux (Total): 11; Épines anales 3; Rayons mous anaux: 8; Vertèbres: 27. It is distinguished from congeners by a reduced number of precaudal vertebrae (12) and a reduced number of infraorbital elements (5), and also by the presence of a faint midlateral stripe, beginning just posterior to the dorsocaudal margin of the opercle and extending to caudal-fin origin (Ref. 57663). It is a comparatively shallow bodied and laterally compressed Ptychochromis (Ref. 57663). In life, base body coloration is silvery to silvery-golden, particularly below lateral midline; cheek and opercular series silvery; body golden with blackish speckles and blotches above midline, including nape, top of head, and infraorbital series; unpaired fins reddish, particularly distally, or dark gray; pectoral fins pale and reddish; pelvic fins pale reddish and may exhibit some black pigmentation along caudal margin (Ref. 57663). In preservative, ground coloration is pale yellowish-olive, with faint dark stripe present along lateral midline, more pronounced posteriorly; fins hyaline to pale yellowish-olive (Ref. 57663).

Biologie     Glossaire (ex. epibenthic)

Life cycle and mating behavior Maturité | Reproduction | Frai | Œufs | Fécondité | Larves

Référence principale Upload your references | Références | Coordinateur : Kullander, Sven O. | Collaborateurs

Stiassny, M.L.J. and J.S. Sparks, 2006. Phylogeny and taxonomic revision of the endemic Malagasy genus Ptychochromis (Teleostei: Cichlidae), with the description of five new species and a diagnosis for Katria, new genus. Am. Mus. Novit. 3535:1-55. (Ref. 57663)

Statut dans la liste rouge de l'IUCN (Ref. 109396)

  Niveau de menace critique (CR) (B1ab(i,iii,v)+2ab(i,v))

CITES (Ref. 94142)

Not Evaluated

Menace pour l'homme

  Harmless




Utilisations par l'homme

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Sources Internet

BHL | Cloffa | Websites from users | FishWatcher | CISTI | Catalog of Fishes (gen., sp.) | DiscoverLife | Faunafri | Fishtrace | GenBank(génôme, nucléotide) | GOBASE | Google Books | Google Scholar | Google | IGFA World Record | Otolith Atlas of Taiwan Fishes | PubMed | Scirus | SeaLifeBase | Arbre de Vie | Wikipedia(aller à, chercher) | World Records Freshwater Fishing | Zoobank | Zoological Record

Estimates of some properties based on models

Phylogenetic diversity index (Ref. 82805):  PD50 = 0.5020   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01995 (0.00906 - 0.04395), b=3.01 (2.83 - 3.19), based on all LWR estimates for this body shape (Ref. 93245).
Niveau trophique (Ref. 69278):  3.2   ±0.1 se; Based on size and trophs of closest relatives
Résilience (Ref. 69278):  Haut, temps minimum de doublement de population inférieur à 15 mois (Preliminary K or Fecundity.).
Vulnérabilité (Ref. 59153):  Low vulnerability (10 of 100) .