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Gymnotiformes (Knifefishes) >
Rhamphichthyidae (Sand knifefishes)
Etymology: Hypopygus: Greek, hypo = under + Greek, pyge = tail (Ref. 45335); isbruckeri: The specific epithet, isbruckeri, is a patronym in honour of I. J. H. Isbrücker for his contributions to Neotropical ichthyology, including Hypopygus (Nijssen & Isbrücker, 1972) (Ref. 88778).
Eponymy: Dr Isaäc J H Isbrücker (d: 1944) is a Dutch ichthyologist who is an expert on the taxonomy of South American armoured catfishes (Callichthyidae, Loricariidae). [...] (Ref. 128868), visit book page.
पर्यावरण: पर्यावरण / जलवायु क्षेत्र / गहराई सीमा / वितरण सीमा
पारिस्थितिकी
; स्वच्छ जल, अलवण जल बेनथोपिलाजिक. Tropical
South America: Hypopygus isbruckeri is known only from the vicinity of San Fernando de Atabapo, Amazonas, Venezuela (Ref. 88778).
आकार / वज़न / आयु
परिपक्व अवधि: Lm ?  range ? - ? cm
Max length : 9.0 cm TL पुल्लिंग / अलिंग; (Ref. 88778)
संक्षिप्त वर्णन
पहचान कुंजी | आकृति विज्ञान | मौरफोमैटरिक्स
Hypopygus isbruckeri is diagnosed from congeners by the following combination of characters: the total number of anal-fin rays (136–156 versus 102–135 in H. hoedemani, H. lepturus, and H. minissimus), the presence of the sixth infraorbital bone (versus absence in H. hoedemani, H. lepturus, and H. minissimus), the presence of oblique bands (versus absence in H. minissimus), the presence of scales at midbody (versus absence in H. minissimus), the total number of pectoral fin rays (12–16 versus 10–12 in H. nijsseni), the number of scales above the lateral line (seven to eight versus five to six in H. nijsseni, and three to five in H. neblinae), the head length (13.2–22.9% of LEA versus 12.6–13.9 in H. ortegai), and the dorsal rami of intermittent branch of anterior lateral line nerve visible as two black parallel lines (versus not visible in H. ortegai) (Ref. 88778).
Body shape (shape guide): elongated.
जीवन चक्र और संभोग व्यवहार
परिपक्व अवधि | पुनरुत्पत्ति | मछलीऔ का अंडे देना | अंडे | उपजाऊपन | लार्वा
de Santana, C.D. and W.G.R. Crampton, 2011. Phylogenetic interrelationships, taxonomy, and reductive evolution in the Neotropical electric fish genus Hypopygus (Teleostei, Ostariophysi, Gymnotiformes). Zool. J. Linn. Soc. 163:1096-1156. (Ref. 88778)
आईयूसीएन रेड लिस्ट स्थिति (Ref. 130435: Version 2025-2 (Global))
मनुष्यों के लिए ख़तरा
Harmless
मानव उपयोग
साधन
विशेष रिपोर्ट
XML डाउनलोड करें
इंटरनेट स्रोत
मॉडल पर आधारित अनुमान
जातिवृति विविधता सूचकांक (संदर्भ 82804) |
PD50 = 0.5010 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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a=0.00269 (0.00108 - 0.00670), b=3.07 (2.85 - 3.29), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245). |
ट्रॉफिक स्तर (संदर्भ 69278) |
3.1 ±0.4 se; based on size and trophs of closest relatives |
मछली पकड़ने की भेद्यता (Ref. 59153) |
Low vulnerability (10 of 100). 🛈 |