Tyttobrycon Marajoara
📖 Overview
Collected from temporary streams, drying completely during the dry season (September to February) and flowing on the rainy season (March to August). Small groups of adults were found on the bottom and marginal portions of the streams in April. Juveniles in large schools were collected along the bottom of the stream in August .
🔬 Taxonomy
🐟 Physical Description
Dorsal soft rays (total): 10 - 11; Vertebrae: 31 - 33. This species differs from all members of the genus Tyttobrycon by the possession of tricuspid premaxillary teeth, tri- or pentacuspid maxillary teeth and four broad tricuspid anterior dentary teeth (vs. all teeth conical in the jaws). It can be further diagnosed from all congeners, except T. dorsimaculatus, by having 5-7 premaxillary teeth (vs. 8-9), and from T. dorsimaculatus by having only scattered melanophores on the dorsal fin (vs. dorsal fin with a conspicuous black spot). The presence of adipose fin separates this species from T. hamatus and T. spinosus (vs. adipose fin absent) . : fusiform / normal.
🌀 Behaviour
Behavioural data for Tyttobrycon Marajoara is currently being reviewed.
🦐 Diet
🥚 Reproduction
🌍 Habitat & Distribution
Freshwater; benthopelagic. Tropical South America: Marajó Island, Brazil.
🌿 Ecology
📐 Morphometrics
🌡️ Water Parameters & Tolerance
🛡️ Conservation Assessment
📊 Population Risk & Fisheries
🦠 Common Diseases
The following diseases are known to affect Tyttobrycon Marajoara.
🔍 Similar Species
👥 Community & Contribute
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