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Siluriformes (Catfishes) >
Loricariidae (Armored catfishes) > Hypoptopomatinae
Etymology: Pseudotothyris: Greek, pseudes = false + Greek, ous, otis = ear + Greek, thyris, -idos = little door (Ref. 45335).
Ambiente: milieu / zona climatica / distribuzione batimetrica / gamma di distribuzione
Ecologia
; acqua dolce demersale. Tropical
South America: coastal drainages from São Sebastião in São Paulo state to Ilha do Superagüi, Baia de Paranaguá in Paraná state, Brazil.
Dimensione / Peso / Età
Maturità: Lm ?  range ? - ? cm
Max length : 4.0 cm SL maschio/sesso non determinato; (Ref. 36885)
Breve descrizione
Chiavi di identificazione | Morfologia | Morfometria
Raggi dorsali molli (totale) : 8 - 10; Raggi anali molli: 6 - 7; Vertebre: 27 - 28. Pseudotothyris obtusa can be diagnosed from all congeners by having the upper pharyngeal toothplate bearing 20-30 teeth (vs. 32-47 in Pseudotothyris ignota, 31-36 in Pseudotothyris janeirensis); ceratobranchial 5 bearing 12-15 teeth (vs. 15-31 in Pseudotothyris ignota, 18-23 in Pseudotothyris janeirensis). It further differs from Pseudotothyris ignota by having the anterior margin of snout completely covered by
odontodes (vs. anterior margin of snout with an odontode-free band); first anal-fin pterygiophore contacting the 12th vertebra (vs. 13th); and metapterygoid-hyomandibula suture reduced, the bones not contacting each other dorsally to the suture (vs. metapterygoid and hyomandibula contacting each other dorsally to the suture). It can be differentiated from Pseudotothyris janeirensis by having scattered plates covering the abdomen partial or totally (vs. abdomen almost naked, except for one to three lateral abdominal plates and one to two preanal plates); spinelet absent (vs. present); three transverse dark saddles on the dorsum (vs. transverse dark saddles on the dorsum absent); subocular cheek plate generally present (vs. always absent); and odontodes on lateral plates randomly distributed (vs. odontodes aligned in well-defined series) (Ref. 116384).
Ciclo vitale e comportamento di accoppiamento
Maturità | Riproduzione | Deposizione | Uova | Fecondità | Larve
Martins, F.O., H.A. Britski and F. Langeani, 2014. Systematics of Pseudotothyris (Loricariidae: Hypoptopomatinae). Zool. J. Linn. Soc. 170:822-874. (Ref. 116384)
Stato della Lista Rossa IUCN (Ref. 130435: Version 2025-2 (Global))
Minaccia per l'uomo
Harmless
Usi umani
Strumenti
Rapporti speciali
Scarica XML
Fonti Internet
Stime basate su modelli
Indice di diversità filogenetica (Fonte Biblio. 82804) |
PD50 = 0.6250 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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a=0.00977 (0.00436 - 0.02192), b=3.06 (2.87 - 3.25), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245). |
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Vulnerabilità della pesca (Ref. 59153) |
Low vulnerability (12 of 100). 🛈 |