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🌊 Marine 🌡️ Subtropical

Surf sprite

Iso natalensis Regan, 1919
Max Length
8 cm
Max Weight
-
Lifespan
-
Trophic Level
3.1
Depth
-
Climate
Subtropical
Resilience
-
Vulnerability
10.00/100
Typical Length
-
Depth Zone
pelagic

📖 Overview

Surf sprite (Iso natalensis), first described by Regan, 1919 is a small fish in the family Isonidae (order Atheriniformes). Adults typically reach 8.00 cm in maximum length. It inhabits marine coastal and open-ocean environments. It occurs in Subtropical waters. It is broadly omnivorous, taking invertebrates, plant matter, and detritus.

Scientific Name
Iso natalensis
Authority
Regan, 1919
Habitat
Marine
Climate
Subtropical
Body Shape
Elongated
Max Length
8 cm
Trophic Level
3.1
Vulnerability
10.00/100
Salinity
30–40 ppt

🐟 Physical Description

Dorsal spines (total): 4 - 7; Dorsal soft rays (total): 12 - 17; Anal spines: 1; Anal soft rays: 21 - 28. Translucent with silver lower head and band along side to silver spot on caudal peduncle and viscera enclosed in silver. : elongated; Cross section: compressed.

🌀 Behaviour

Behavioural data for Surf sprite 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; pelagic-neritic. Subtropical South Africa.

🌿 Ecology

Zone Preferences
🌊 Marine 🐟 Pelagic
Trophic Level
3.1±0.3

📐 Morphometrics

Length–Weight Relationship: W = 0.00389 × L3.12 (TL)
Max TL
8cm
Dorsal Spines
6
Dorsal Rays
15
Anal Spines
1
Anal Rays
25

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

📊 Population Risk & Fisheries

Fishing Vulnerability
10.00/100
Low vulnerability
Trophic Level
3.1
Predator
Body Shape
Elongated
Climate Zone
Subtropical
Described By
Regan, 1919

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