Seven ray toothcarp
📖 Overview
Seven ray toothcarp (Phalloceros heptaktinos), first described by Lucinda, 2008 is a tiny fish in the family Poeciliidae (order Cyprinodontiformes). Adults typically reach 2.40 cm in maximum length. It inhabits freshwater systems including rivers, streams, and lakes. It occurs in Tropical waters. It is broadly omnivorous, taking invertebrates, plant matter, and detritus. On the IUCN Red List, it is classified as Data Deficient.The species is kept in the aquarium hobby. Care requirements and behaviour align broadly with other Poeciliidae kept in the hobby.
🔬 Taxonomy
🐟 Physical Description
Dorsal soft rays (total): 7 - 8; Anal soft rays: 9 - 11; Vertebrae: 31. Diagnosed from its congeners by the absence of the basal process of first gonactinost. Can be differentiated from its congeners by the sexual dimorphism on number of dorsal-fin rays, males with eight rays (very exceptionally seven) and females with seven rays (very exceptionally eight) .
🌀 Behaviour
Behavioural data for Seven ray toothcarp is currently being reviewed.
🦐 Diet
🥚 Reproduction
🌍 Habitat & Distribution
Freshwater; benthopelagic. Tropical South America: known only from tributarues of the arroio dos Ratos, Jacuí basin in Rio Grande do Sul, Brazil.
🌿 Ecology
📐 Morphometrics
🌡️ Water Parameters & Tolerance
🛡️ Conservation Assessment
📊 Population Risk & Fisheries
🦠 Common Diseases
The following diseases are known to affect Seven ray toothcarp.
🔍 Similar Species
👥 Community & Contribute
No observations yet - be the first to log one!
View all observations for Seven ray toothcarp ↗Spotted incorrect or outdated data? Submit a correction and our editorial team will review it. Approved edits go live within 48 hours.
Found a factual error, broken data, or inappropriate content? Let us know and we will investigate promptly.