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Cichliformes (Cichlids, convict blennies) >
Cichlidae (Cichlids) > Retroculinae
Etymology: Retroculus: Latin, retro = backwards, on the back side + Latin, oculus = eye; the relative posterior position of the eye in the head as compared to other cichlids (Ref. 45335).
More on author: Castelnau.
Taxonomic Remarks
Redescription in Gosse (1971) with bibliography, diagnosis, description, and illustration.
Miljö: miljö / Klimatzon / djupintervall / distributionsområde
Ekologi
; sötvatten bentopelagisk; pH range: 7.0 - ? ; dH range: ? - 15. Tropical; 22°C - 27°C (Ref. 2059)
South America: Amazon River basin, in the Tocantins and Capim River basins, Brazil.
Storlek / Vikt / Ålder
Könsmognad: Lm ?  range ? - ? cm
Max length : 19.5 cm SL hane/ej könsbestämd; (Ref. 125983); 25.1 cm SL (female); publicerad maxvikt: 443.43 g (Ref. 125983); publicerad maxvikt: 443.43 g
In adults, males are larger, with extended dorsal, anal and pelvic fins (Ref. 37197).
Livscykel och parningsbeteende
Könsmognad | Reproduktion | Lek | Ägg | Fekunditet | Larver
Pair builds nest of about 60 cm diameter in gravel. Both parents defend nest; about 200 eggs are frequently reshuffled by both parents; larvae hatched 5-6 days after spawning.
Kullander, S.O., 2003. Cichlidae (Cichlids). p. 605-654. In R.E. Reis, S.O. Kullander and C.J. Ferraris, Jr. (eds.) Checklist of the Freshwater Fishes of South and Central America. Porto Alegre: EDIPUCRS, Brasil. (Ref. 36377)
Status på IUCN:s rödlista (Ref. 130435: Version 2025-2 (Global))
Hot mot människor
Harmless
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Uppskattningar baserade på modeller
Index för fylogenetisk mångfald (Ref. 82804) |
PD50 = 0.6250 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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a=0.01820 (0.01138 - 0.02910), b=3.06 (2.92 - 3.20), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref. 93245). |
Trofisk nivå (Ref. 69278) |
3.5 ±0.3 se; based on size and trophs of closest relatives |
Resiliens (Ref. 120179) |
Mellan, lägsta populationsfördubblingstid 1,4-4,4 år (Preliminary K or Fecundity.). |
Sårbarhet i fisket (Ref. 59153) |
Low to moderate vulnerability (33 of 100). 🛈 |