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🌊 Marine Data Deficient 🐠 Aquarium 🌡️ Tropical

Serranus Drewesi

Serranus drewesi Iwamoto, 2018
Max Length
6.5 cm
Max Weight
-
Lifespan
-
Trophic Level
3.3
Depth
-
Climate
Tropical
Resilience
High
Vulnerability
16.00/100
Typical Length
-
Depth Zone
reef

📖 Overview

Serranus Drewesi (Serranus drewesi) is a ray-finned fish of the family Serranidae. It inhabits marine (saltwater) waters in reef-associated environments. This species can reach a maximum total length of 6.5 cm. With a trophic level of 3.3, it is a low-level carnivore, feeding on invertebrates and small organisms. It is assessed as Data Deficient on the IUCN Red List.

Scientific Name
Serranus drewesi
Authority
Iwamoto, 2018
Habitat
Marine
Climate
Tropical
Body Shape
Fusiform / normal
IUCN Status
DD
Max Length
6.5 cm
Trophic Level
3.3
Resilience
High
Vulnerability
16.00/100
Salinity
30–40 ppt

🐟 Physical Description

Dorsal spines (total): 10; Dorsal soft rays (total): 11; Anal spines: 3; Anal soft rays: 6. This species is distinguished by the following characters: D X,11; A III, 6; P 14; gill rakers 3 + 11; scales below 1D origin about 5 and below 2D 4+1+8-9; pored lateral line scales 44, circumpeduncular scales 1+9+1+10 (total 21); tubular anterior nostril, the rim is greatly elevated posteriorly and having 7-8 long cirri at tip; cycloid scales except for a hard, sharply spinulated suprascapular scale bone above the upper opening of the gill cover; a weakly emarginate caudal fin, with upper and lower lobes about equal; interradial membrane of soft dorsal and anal fins scaly on basal 1/2 to 1/3; cycloid scales covering the nape, opercle, preopercle, interopercle, mandibualr ramus, pectoral-fin base and chest; presence of a bold, black spot between the last 3 spines and first soft dorsal ray formed above broad black saddle on dorsal half of body .: fusiform / normal; Cross section: compressed.

🌀 Behaviour

Behavioural data for Serranus Drewesi 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; reef-associated; depth range ? - 19 m . Tropical

🌿 Ecology

Zone Preferences
🌊 Marine 🪸 Reef Associated
Trophic Level
3.3±0.3

📐 Morphometrics

Length–Weight Relationship: W = 0.01096 × L3.05 (TL)
Max TL
6.5cm
Dorsal Spines
10
Dorsal Rays
11
Anal Spines
3
Anal Rays
6

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

🛡️ Conservation Assessment

IUCN Category
Data Deficient
Assessment Date
2018

📊 Population Risk & Fisheries

Population Resilience
High
Minimum doubling time
Fishing Vulnerability
16.00/100
Low vulnerability
Trophic Level
3.3
Predator
Body Shape
Fusiform / normal
Climate Zone
Tropical
Described By
Iwamoto, 2018

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