Environment: milieu / climate zone / depth range / distribution range
Οικολογία
; Γλυκού νερού; Υφάλμυρο βενθοπελαγικό; pH range: 7.0 - 8.2; dH range: 10 - 40; μη μεταναστευτικό(ά). Tropical; 26°C - 28°C (Ref. 2060)
America: between Suriname and Brazil (not the Atlantic area South of the Laguna dos
Patos basin in Brazil); introduced to the Caribbean.
Μέγεθος / Βάρος / Age
Maturity: Lm ? range ? - ? cm
Max length : 7.8 cm TL αρσενικό/απροσδιόριστο; (Ref. 111953); common length : 3.8 cm SL αρσενικό/απροσδιόριστο; (Ref. 26728); μεγ. δημοσιευμένο βάρος: 6.48 g (Ref. 111953)
Short description
Κλείδες προσδιορισμού | Μορφολογία | Μορφομετρία
Ραχιαίες άκανθες (συνολικά) : 0; Μαλακές ραχιαίες ακτίνες (συνολικά) : 6 - 8; Εδρικές άκανθες: 0; Μαλακές εδρικές ακτίνες: 7 - 9.
Widespread in mildly brackish water in canals and drainage ditches at the edges of swamps, but rarely found in freshwater. Feeds on mosquito larvae and has at times been used for control in ponds and reservoirs (Ref. 35237).
Life cycle and mating behavior
Maturities | Αναπαραγωγή | Spawnings | Egg(s) | Fecundities | Προνύμφες
Males are very active and also approach the females of other Poecilinae. [Females produce 6 - 10 offspring which follow their mother for a few hours after birth, referring to Ref. 35237.] After 28 days gestation, female gives birth to 100 young or more. Sexual maturity is reached after 3-4 months (Ref. 2060).
Kenny, J.S., 1995. Views from the bridge: a memoir on the freshwater fishes of Trinidad. Julian S. Kenny, Maracas, St. Joseph, Trinidad and Tobago. 98 p. (Ref. 11225)
IUCN Red List Status (Ref. 130435)
Threat to humans
Harmless
Human uses
αλιεία: χωρίς ενδιαφέρον
Εργαλεία
Special reports
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Διαδικτυακές πηγές
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=0.01047 (0.00655 - 0.01674), b=3.27 (3.14 - 3.40), in cm total length, based on LWR estimates for this species & Genus-body shape (Ref.
93245).
Τροφικό Επίπεδο (Ref.
69278): 2.3 ±0.1 se; based on diet studies.
Ελαστικότητα (Ref.
120179): Μεσαίο(α), ελάχιστος χρόνος για διπλασιασμό πληθυσμού 1,4 - 4,4 έτη (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
