Classification / Names
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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).
Environment: milieu / climate zone / depth range / distribution range
นิเวศวิทยา
; น้ำจืด สัตว์น้ำหน้าดิน. Tropical
South America: coastal drainages from São Sebastião in São Paulo state to Ilha do Superagüi, Baia de Paranaguá in Paraná state, Brazil.
ขนาด / น้ำหนัก / Age
Maturity: Lm ? range ? - ? cm
Max length : 4.0 cm SL เพศผู้/กระเทย; (Ref. 36885)
Short description
เครื่องมือที่ใช้ในการแยกชนิดสัตว์,สิ่งมีชีวิตออกจากกัน | สัณฐานวิทยา | ความยาวต่างๆ
ก้านครีบอ่อนที่หาง (รวม) : 8 - 10; ก้านครีบอ่อนที่ก้น: 6 - 7; สัตว์มีกระดูกสันหลัง: 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).
Life cycle and mating behavior
Maturities | การสืบพันธุ์ | Spawnings | Egg(s) | Fecundities | ตัวอ่อน
Martins, F.O., H.A. Britski and F. Langeani, 2014. Systematics of Pseudotothyris (Loricariidae: Hypoptopomatinae). Zool. J. Linn. Soc. 170:822-874. (Ref. 116384)
IUCN Red List Status (Ref. 130435)
Threat to humans
Harmless
Human uses
เครื่องมือ
Special reports
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.6250 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.02089 (0.00646 - 0.06755), b=3.03 (2.78 - 3.28), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
