Danio rerio  (Hamilton, 1822)

Zebra danio
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Image of Danio rerio (Zebra danio)
Danio rerio
Male picture by Noren, M.

Classification / Names Κοινά ονόματα | Συνώνυμα | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

Ακτινοπτερύγιοι > Cypriniformes (Carps) > Cyprinidae (Minnows or carps) > Danioninae
Etymology: Danio: Vernacular name fron India and Sri Lanka .

Environment: milieu / climate zone / depth range / distribution range Οικολογία

; Γλυκού νερού βενθοπελαγικό; pH range: 6.0 - 8.0; dH range: 5 - 19.   Tropical; 18°C - 24°C (Ref. 1672); 33°N - 8°N, 66°E - 98°E

Κατανομή Χώρες | Περιοχές FAO | Οικοσυστήματα | Παρουσίες | Point map | Εισαγωγές | Faunafri

Asia: Pakistan, India, Bangladesh, Nepal and Myanmar (Ref. 41236). Reported from Bhutan (Ref. 40882). Appearance in Colombian waters presumably by escape from an aquarium fish rearing facility (Ref. 1739).

Length at first maturity / Μέγεθος / Βάρος / Age

Maturity: Lm 2.5  range ? - ? cm
Max length : 3.8 cm SL αρσενικό/απροσδιόριστο; (Ref. 41236)

Short description Μορφολογία | Μορφομετρία

Σπόνδυλοι: 31 - 32. Five uniformly, pigmented, horizontal stripes on the side of the body, all extending onto the end of caudal fin rays. Anal fin distinctively striped. Lateral line absent. Rostral barbels extend to anterior margin of orbit; maxillary barbels end at about middle of opercle. Branched anal fin rays 10-12. Vertebrae 31-32.

Βιολογία     Γλωσσάρι (π.χ. epibenthic)

Adults inhabit streams, canals, ditches, ponds and beels (Ref. 1479). Occur in slow-moving to stagnant standing water bodies, particularly rice-fields (Ref. 4832); and lower reaches of streams (Ref. 58912). Common in rivulets at foot hills (Ref. 41236). Feed on worms and small crustaceans (Ref. 7020); also on insect larvae. Breed all year round (Ref. 58913). Appears to be primarily an annual species in the wild, the spawning season starting just before the onset of the monsoon (Ref. 72224). Domesticated zebrafish live on average 3.5 years, with oldest individuals surviving up to 5.5 years (Ref. 58923). Spawning is induced by temperature and commences at the onset of the monsoon season (Ref. 58913). Food availability also acts as cue for breeding (Ref. 58913). Growth rate is a vital guiding environmental factor for sexual differentiation for this species as observed in a study (Ref. 58948). In this same study, frequency and amount of food prior to and throughout gonadal differentiation period resulted in more individuals differentiating to become females and is more pronounced in hybrid than pure bred groups (Ref. 58948). Often used for mosquito control (Ref 6351). Popular for aquarium purposes (Ref. 44325). Used as a model system (=organism) for developmental biology (Ref. 47810). Aquarium keeping: in groups of 5 or more individuals; minimum aquarium size 60 cm (Ref. 51539).

Life cycle and mating behavior Γεννητική Ωρίμανση | Αναπαραγωγή | Γεννοβολία | Αβγά | Γονιμότητα | Προνύμφες

Breed all year round (Ref. 58931). From Johnson (1932), 'a female never extrudes eggs during active courtship until the genital organ comes in contact with that of the male, whereupon a small stream of eggs is ejected' (Ref. 205). Violent dashing and chasing characterise courtship finally culminating in eggs being shed a few at a time, settling freely without adhering to the bottom surface (Ref. 205).

Main reference Upload your references | Αναφορές | Συντονιστής | Συνεργάτες

Talwar, P.K. and A.G. Jhingran, 1991. Inland fishes of India and adjacent countries. vol 1. A.A. Balkema, Rotterdam. 541 p. (Ref. 4832)

IUCN Red List Status (Ref. 115185)

CITES (Ref. 115941)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless




Human uses

αλιεία: χωρίς ενδιαφέρον; Ενυδρείο: πολύ εμπορικό
FAO(Publication : search) | FishSource |

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Διαδικτυακές πηγές

Estimates of some properties based on models

Phylogenetic diversity index (Ref. 82805):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00724 (0.00324 - 0.01618), b=3.07 (2.88 - 3.26), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
Τροφικό Επίπεδο (Ref. 69278):  3.1   ±0.1 se; Based on diet studies.
Ελαστικότητα (Ref. 69278):  Υψηλό, ελάχιστος χρόνος για διπλασιασμό πληθυσμού < 15 μήνες (tmax=5.5 (in captivity); tm<1; multiple spawning per year; Fec=400-500).
Prior r = 0.9, 2 SD range = 0.29 - 2.75, log(r) = -0.11, SD log(r) = 0.56, Based on: 2 K, 3 tgen, 2 Fec records
Vulnerability (Ref. 59153):  Low vulnerability (11 of 100) .