Classification / Names
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Siluriformes (Catfishes) >
Trichomycteridae (Pencil or parasitic catfishes) > Trichomycterinae
Etymology: Trichomycterus: Greek, thrix = hair + Greek, mykter, -eros = nose (Ref. 45335); macrophthalmus: Specific name is derived from the Greek makrós (large) and ophthalmós (eye), an uncommon condition among species of Trichomycterus..
More on authors: Barbosa & Costa.
Environment: milieu / climate zone / depth range / distribution range
นิเวศวิทยา
; น้ำจืด สัตว์น้ำหน้าดิน. Tropical
South America: Known only from the type locality, a small stream tributary to upper Piraí river, Araras hill, upper Paraíba do Sul river basin, Brazil.
ขนาด / น้ำหนัก / Age
Maturity: Lm ?  range ? - ? cm
Max length : 6.0 cm SL เพศผู้/กระเทย; (Ref. 89884)
Short description
เครื่องมือที่ใช้ในการแยกชนิดสัตว์,สิ่งมีชีวิตออกจากกัน | สัณฐานวิทยา | ความยาวต่างๆ
ก้านครีบอ่อนที่หาง (รวม) : 11; ก้านครีบอ่อนที่ก้น: 9; สัตว์มีกระดูกสันหลัง: 35 - 36. Distinguished from all congeners from southeastern Brazil by having nine pleural ribs (vs. 10- 17). This is similar to Trichomycterus travassosi and distinguished from all other species of southeastern Brazil by having shorter nasal barbel, its tip reaching eye (vs. between middle of the distance eyeopercular patch of odontodes and pectoral-fin base). Can be separated from T. travassosi by having larger eye (13.2 - 14.6% of head length, vs. 8.5- 10.7 %) and dorsal and lateral midline spots coalesced to form transverse bars (vs. lateral midline spots not confluent to dorsal spots) (Ref. 89884).
Found actively swimming during day time in shallow places (20-40 cm deep) with fast flowing water, usually on gravel substratum, sometimes partially burrowed in the sand (Ref. 89884). Sympatric with Trichomycterus claudiae (Ref. 89884).
Life cycle and mating behavior
Maturities | การสืบพันธุ์ | Spawnings | Egg(s) | Fecundities | ตัวอ่อน
Barbosa, M.A. and W.J.E.M Costa, 2012. Trichomycterus macrophthalmus (Teleostei: Siluriformes: Trichomycteridae), a new species of catfish from the Paraíba do Sul river basin, southeastern Brazil. Verteb. Zool. 62(1):79-82. (Ref. 89884)
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 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00977 (0.00319 - 0.02993), b=3.02 (2.77 - 3.27), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
ระดับชั้นอาหาร (Ref.
69278): 3.2 ±0.4 se; based on size and trophs of closest relatives
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).