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🌊 Marine 🌡️ Tropical

Small-scale tonguefish

Symphurus polylepis Lee & Munroe, 2021
Max Length
5 cm
Max Weight
-
Lifespan
-
Trophic Level
3.2
Depth
0–23 m
Climate
Tropical
Resilience
High
Vulnerability
10.00/100
Typical Length
-
Depth Zone
demersal

📖 Overview

More accurate information about geographic distribution, bathymetric distribution and substrata where this species is found needed to better understand the ecology, distribution and life history of this species .

Scientific Name
Symphurus polylepis
Authority
Lee & Munroe, 2021
Habitat
Marine
Climate
Tropical
Max Length
5 cm
Depth Range
0–23 m
Trophic Level
3.2
Resilience
High
Vulnerability
10.00/100
Salinity
30–40 ppt

🐟 Physical Description

Dorsal soft rays (total): 84 - 87; Anal soft rays: 68 - 74; Vertebrae: 46 - 48. is distinguished from all congeners by the combination of: ID pattern1-2-2-2-2 ; caudal-fin rays 12; vertebrae, 9 (3 +6) abdominal, 46-48 total; hypurals 4; D 84-87, A 68-74; longitudinal scale rows 88-94; transverse scale rows 32-34; scale rows on head posterior to lower orbit 17-19; fleshy ridge well developed on posterior part of ocular-side lower jaw; fleshy membrane covering both eyes; anterior margin of upper eye usually slightly in advance of anterior margin of lower eye; with fleshy flap continuous between ocular-side anterior nostril and anterior region of lower eye; upper head lobe is usually wider than lower head lobe; head length moderately long (HL = 21.9-23.8% of SL) and relatively large postorbital length (POL = 15.7-16.6% of SL, 69.3-73.3% of HL); preanal length relatively short (PAL = 23.5-24.6% of SL); snout short (SNL = 16.0-18.3% of HL, SNL/ED = 1.44-1.86), rounded to obliquely blunt anteriorly; head length usually shorter than head width (HW/HL= 1.02-1.14); dorsal-fin origin in posterior position at, or slightly posterior to, vertical through posterior margin of upper eye; predorsal length moderately long (PDL = 5.7-7.1% of SL; 24.4-31.4% of HL). Colouration: ocular side uniformly yellow to light-brown, blind side uniformly white, both sides with obvious dermal spots on bases of anteriormost dorsal- and anal-fin rays, and peritoneum bluish-black .Cross section: flattened.

🌀 Behaviour

Behavioural data for Small-scale tonguefish is currently being reviewed.

🦐 Diet

aquatic invertebrates
small fish
algae
detritus

🥚 Reproduction

🐣 Oviparous 📦 Batch Spawner
Spawning Season
spring-summer
Spawn Location
Pelagic
Fertilization
External

🌍 Habitat & Distribution

Marine; demersal; depth range 0 - 23 m , usually 0 - 10 m . Tropical

🌿 Ecology

Zone Preferences
🌊 Marine ⬇️ Benthic
Trophic Level
3.2±0.4

📐 Morphometrics

Length–Weight Relationship: W = 0.00427 × L3.14 (TL)
Max TL
5cm
Dorsal Rays
86
Anal Rays
71
Vertebrae
47

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

📊 Population Risk & Fisheries

Population Resilience
High
Minimum doubling time
Fishing Vulnerability
10.00/100
Low vulnerability
Trophic Level
3.2
Predator
Climate Zone
Tropical
Described By
Lee & Munroe, 2021

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