>
Siluriformes (Catfishes) >
Doradidae (Thorny catfishes) > Doradinae
Etymology: Rhinodoras: Greek, rhinos = nose + Greek, dora = skin (Ref. 45335); armbrusteri: Named for Jonathan William Armbruster, for his sterling contributions to the collection and study of neotropical fishes and for deftly leading the expedition to Guyana that resulted in the discovery of this species.
Eponymy: Dr Jonathan William Armbruster (d: 1969) is Professor and Curator of Fishes at Auburn University, Alabama. [...] (Ref. 128868), visit book page.
Environment: milieu / climate zone / depth range / distribution range
বাস্তুসংস্থান
; স্বাদু পানি তলদেশ বিহারী. Tropical
South America: Takutu River (including its tributary, Ireng) that drains into the upper Rio Branco (Amazonas basin), Guyana and Brazil, and the Rupununi River (Essequibo basin) in Guyana.
আকৃতি / ওজন / Age
Maturity: Lm ? range ? - ? cm
Max length : 9.6 cm SL পুরুষ/ লিঙ্গ অনিধর্ারিত ; (Ref. 75166)
Short description
সনাক্তকারী নির্দেশক | বহিঃ অঙ্গ সংস্থান | মরফোমেট্রিক্স
পৃষ্ঠীয় কাঁটা (মোট ) : 1; পৃষ্ঠীয় নরম পাখনা দন্ড (মোট ) : 6. Differs from all nominal species of the genus Rhinodoras by the following combination of characters: heavy pigmentation on ventral surfaces with many dark speckles or larger spots on belly usually extending onto gular region; anterior midlateral plates moderately deep, depth fifth plate 26.3-29% of corresponding body depth; depths of dorsal and ventral wings of anterior plates subequal, depth of dorsal wing slightly less than twice that of ventral; midlateral plates 57-60, midlateral plates anterior to vertical through pelvic fin origin usually five; tympanal portion of lateral-line canal moderately ossified with two or three distinct plates, posterior-most largest with low medial ridge or thorn and moderately developed wings with serrated margins; postcleithral process moderately short and broad, depth 36.8-44.3% of length; adipose eyelid moderate to large, horizontal diameter 11.4-14.2% of HL; pectoral fin usually I,8; and gas bladder one-part with terminal diverticula small and fused. This fish most closely resembles Rhinodoras boehlkei and can be differentiated from this by the following features: heavy pigmentation with many dark speckles or spots on ventral surfaces more elongated postcleithral process, depth 36.8-44.3%; larger adipose eyelid, horizontal diameter 11.4-14.2%; and midlateral plates 57-60 (Ref. 75166).
There were individuals encountered during the day hiding in cavities in lateritic boulders submerged in less than three meters of water. An adult specimen was observed at night in a swift shallow run over bedrock (Ref. 75166).
Life cycle and mating behavior
পরিপক্কতা | প্রজনন | ডিম ছাড়া | ডিমসমূহ | ডিম্বধারন ক্ষমতা | শুককীট
Sabaj, M.H., D.C. Taphorn and O.E. Castillo G., 2008. Two new species of thicklip thornycats, genus Rhinodoras (Teleostei: Siluriformes: Doradidae). Copeia 2008(1):209-226. (Ref. 75166)
IUCN Red List Status (Ref. 130435: Version 2024-1)
Threat to humans
Harmless
Human uses
হাতিয়ার
Special reports
Download XML
ইন্টারনেট সুত্র
Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5312 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01122 (0.00528 - 0.02384), b=2.98 (2.80 - 3.16), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
ট্রফিক পর্যায়ে (Ref.
69278): 2.9 ±0.4 se; based on size and trophs of closest relatives
স্থিতিস্থাপক (Ref.
120179): উচ্চ, সর্বনিম্ন প্রজন দ্বিগুনের সময় ১৫ মাস (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
