Classification / Names
Κοινά ονόματα | Συνώνυμα | Catalog of Fishes(Γένος, Είδη) | ITIS | CoL | WoRMS | Cloffa
>
Gymnotiformes (Knifefishes) >
Hypopomidae (Bluntnose knifefishes)
Etymology: Hypopygus: Greek, hypo = under + Greek, pyge = tail (Ref. 45335); ortegai: The specific epithet, ortegai, is a patronym in honour of the Peruvian ichthyologist Hernán Ortega Torres, for his many contributions to Neotropicalichthyology and for his participation in the expedition that discovered this species (Ref. 88778).
Environment: milieu / climate zone / depth range / distribution range
Οικολογία
; Γλυκού νερού βενθοπελαγικό. Tropical
South America: Hypopygus ortegai is known from small tributaries in the upper Amazon of Peru, near the towns of Iquitos and Jenaro Herrera, Loreto (Ref. 88778).
Μέγεθος / Βάρος / Age
Maturity: Lm ? range ? - ? cm
Max length : 11.4 cm TL αρσενικό/απροσδιόριστο; (Ref. 88778)
Short description
Μορφολογία | Μορφομετρία
Hypopygus ortegai is diagnosed from congeners by the following combination of characters: the dorsal rami of intermittent branch of anterior lateral line nerve not visible (versus visible in remain species), the total number of anal-fin rays (137-147 versus 102–135 in H. hoedemani, H. lepturus, and H. minissimus; 155–174 in H. cryptogenes), 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 head length (12.6–13.9% of LEA versus 13.2–15.3 in H. nijsseni), the distance at the nape (11.0–12.5% of LEA versus 12.5–13.8 in H. nijsseni), the distance from the anus to the anal-fin ray (6.5–9.5% of LEA versus 10.0–12.0 in H. neblinae), and the head length (12.6–13.9% of LEA versus 13.2–22.9 in H. isbruckeri) (Ref. 88778).
Electric organ discharge: Data available from eight specimens in type series, from the vicinity of Jenaro Herrera, Loreto, Peru. Hypopygus ortegai generates a tetraphasic EOD ranging in duration from 1.17 to 2.11 ms (mean 1.73, N = 7), and with a PPF ranging from 1.408 to 1.869 kHz (mean 1.661, N = 7). Mean pulse rate during the day ranges from 44.7 to 56.8 Hz (mean 50.3, mean CV 0.91, N = 8), and during the night from 59.2 to 65.5 Hz (mean 62.1, mean CV 2.87, N = 8) (Ref. 88778).
Life cycle and mating behavior
Γεννητική Ωρίμανση | Αναπαραγωγή | Γεννοβολία | Αβγά | Γονιμότητα | Προνύμφες
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)
IUCN Red List Status (Ref. 130435)
Threat to humans
Harmless
Human uses
Περισσότερες πληροφορίες
Κοινά ονόματαΣυνώνυμαΜεταβολισμόςΘηρευτέςΟικοτοξικολογίαΑναπαραγωγήΓεννητική ΩρίμανσηΓεννοβολίαΣυναθροίσεις γεννοβολίαςΓονιμότηταΑβγάEgg development
Age/SizeΑύξησηLength-weightLength-lengthLength-frequenciesΜορφομετρίαΜορφολογίαΠρονύμφεςΔυναμική προνυμφώνΣτρατολόγησηΑφθονίαBRUVS
ΑναφορέςΥδατοκαλλιέργειεςΠροφίλ υδατοκαλλιέργειαςΣτελέχοιΓενετικήElectrophoresesΚληρονομικότηταΑσθένειεςΜεταποίησηNutrientsMass conversion
ΣυνεργάτεςΦωτογραφίεςStamps, Coins Misc.ΉχοιΣιγκουατέραΤαχύτηταΚολυμβητικός ΤύποςΕπιφάνεια βραγχίωνOtolithsΕγκέφαλοιΌραση
Εργαλεία
Special reports
Download XML
Διαδικτυακές πηγές
Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5039 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00380 (0.00145 - 0.00994), b=3.06 (2.83 - 3.29), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Τροφικό Επίπεδο (Ref.
69278): 3.1 ±0.4 se; based on size and trophs of closest relatives
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
![Image of Hypopygus ortegai (Ortega\](/images/thumbnails/gif/tn_HYPOPOT0.gif "Image of Hypopygus ortegai (Ortega\")
