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💧 Freshwater Least Concern 🐠 Aquarium 🌡️ Tropical

Baryancistrus Chrysolomus

Baryancistrus chrysolomus Daniel, Zuanon & Ribeiro de Oliveira, 2011
Max Length
29.6 cm
Max Weight
-
Lifespan
-
Trophic Level
-
Depth
-
Climate
Tropical
Resilience
Medium
Vulnerability
37.00/100
Typical Length
-
Depth Zone
demersal

📖 Overview

Adults occur under large flat rocks settled directly on the river bottom, in places with considerable amounts of fine sediments. Young individuals inhabit marginal areas of the rapids, near the river banks, usually just one or two individuals. They occupy under rocks in places with slow to moderate flowing waters, usually with sediment accumulation over the rocks and river bottom. Based on two specimens, this species feeds mainly on diatoms and occasionally on invertebrate larvae associated with fine sediments and sand grains .

Scientific Name
Baryancistrus chrysolomus
Authority
Daniel, Zuanon & Ribeiro de Oliveira, 2011
Habitat
Freshwater
Climate
Tropical
Body Shape
Elongated
IUCN Status
LC
Max Length
29.6 cm
Resilience
Medium
Vulnerability
37.00/100
Salinity
0–0.5 ppt

🐟 Physical Description

Dorsal spines (total): 2; Dorsal soft rays (total): 7; Anal soft rays: 5. Distinguished from its congeners by having a broad orange to yellow band along the entire distal border of dorsal and caudal fins. Can be diagnosed from other species of Baryancistrus by the combination of the following characters: absence of clear dots on the body; naked abdomen; mandibullary teeth around 70; and dark body with very faint, almost indistinguishable light marks. Both young of Baryancistrus xanthellus and Baryancistrus chrysolomus possess wide light bands on dorsal and caudal fins, but these bands are only retained in adults of Baryancistrus chrysolomus. Both species differ in body coloration, Baryancistrus xanthellus is spotted while Baryancistrus chrysolomus is almost plain .: elongated.

🌀 Behaviour

Behavioural data for Baryancistrus Chrysolomus is currently being reviewed.

🦐 Diet

aquatic invertebrates
small fish
algae
detritus

🥚 Reproduction

🐣 Oviparous
Spawning Season
spring
Spawn Location
Substrate
Fertilization
External

🌍 Habitat & Distribution

Freshwater; demersal. Tropical South America: Rio Xingu drainage in Brazil.

🌿 Ecology

Zone Preferences
💧 Freshwater ⬇️ Benthic
Food Items

diatoms and occasionally on invertebrate larvae associated with fine sediments and sand grains (Ref

📐 Morphometrics

Length–Weight Relationship: W = 0.01549 × L3 (TL)
Max TL
29.6cm
Dorsal Spines
2
Dorsal Rays
7
Anal Rays
5

🌡️ Water Parameters & Tolerance

Salinity Range
0–0.5ppt

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2018

📊 Population Risk & Fisheries

Population Resilience
Medium
Minimum doubling time
Fishing Vulnerability
37.00/100
Moderate vulnerability
Body Shape
Elongated
Climate Zone
Tropical
Described By
Daniel, Zuanon & Ribeiro de Oliveira, 2011

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