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💧 Freshwater Least Concern 🌡️ Tropical

Paracanthocobitis Zonalternans

Paracanthocobitis zonalternans Blyth, 1860
Max Length
12.2 cm
Max Weight
-
Lifespan
-
Trophic Level
2.7
Depth
-
Climate
Tropical
Resilience
Medium
Vulnerability
35.00/100
Typical Length
-
Depth Zone
demersal

📖 Overview

Found in a variety of streams from river mainstreams to small brooks. Apparently avoids mountain streams with steep gradient and prefer shallow riffles over small pebbles above which its marmorated color pattern makes it inconspicuous from the surface. Also collected on a muddy to sandy substrate with a few stones and numerous gastropod shells in depths ranging from 0.05 to 0.5 m.

Scientific Name
Paracanthocobitis zonalternans
Authority
Blyth, 1860
Habitat
Freshwater
Climate
Tropical
Body Shape
Elongated
IUCN Status
LC
Max Length
12.2 cm
Trophic Level
2.7
Resilience
Medium
Vulnerability
35.00/100
Water Temp
24–26 °C
Salinity
0–0.5 ppt

🔬 Taxonomy

Genus
Paracanthocobitis
Paracanthocobitis
Species
Paracanthocobitis Zonalternans
Paracanthocobitis zonalternans

🐟 Physical Description

Paracanthocobitis zonalternans differs from all its congeners by combination of the following characters: lateral line incomplete, ending near insertion of dorsal fin; dorsal fin with 9½-10½ branched rays; presence of axillary pelvic lobe; series of black blotches, usually without black stripe but with faint dusky stripe, along side of body, usually ending near dorsal-fin insertion; circular black spot on upper margin of caudal-fin base; black pigment extending from lateral stripe onto pectoral-fin base; absence of marmorated pattern anterior to origin of dorsal fin; dorsal saddles short, rarely connecting to lateral blotches; and upper caudal fin with 8 (occasionally 7) branched rays .: elongated.

🌀 Behaviour

Behavioural data for Paracanthocobitis Zonalternans 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; pH range: 6.8 - 7.8; dH range: 8 - 18. Tropical; 24°C - 26°C

🌿 Ecology

Zone Preferences
💧 Freshwater ⬇️ Benthic
Trophic Level
2.7±0.3

📐 Morphometrics

Length–Weight Relationship: W = 0.00813 × L3.01 (TL)
Max TL
12.2cm

🌡️ Water Parameters & Tolerance

Temperature Range
24–26°C
pH Range
6.8–7.8
Salinity Range
0–0.5ppt

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2010

📊 Population Risk & Fisheries

Population Resilience
Medium
Minimum doubling time
Fishing Vulnerability
35.00/100
Low vulnerability
Trophic Level
2.7
Omnivore / Planktivore
Body Shape
Elongated
Climate Zone
Tropical
Described By
Blyth, 1860

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