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🌊 Marine Data Deficient 🌡️ Tropical

Pearse's mudskipper

Periophthalmus novemradiatus Hamilton, 1822
Max Length
10 cm
Max Weight
-
Lifespan
-
Trophic Level
3.2
Depth
-
Climate
Tropical
Resilience
High
Vulnerability
13.00/100
Typical Length
-
Depth Zone
demersal

📖 Overview

Facultative air-breathing ; An intertidal and amphibious air-breather that actively shuttles back and forth between rock pools and air .

Scientific Name
Periophthalmus novemradiatus
Authority
Hamilton, 1822
Habitat
Marine
Climate
Tropical
Body Shape
Fusiform / normal
IUCN Status
DD
Max Length
10 cm
Trophic Level
3.2
Resilience
High
Vulnerability
13.00/100
Migration
Amphidromous
Salinity
30–40 ppt

🐟 Physical Description

Dorsal spines (total): 9 - 11; Dorsal soft rays (total): 11 - 12; Anal spines: 1; Anal soft rays: 12 - 13. This is a sexually dimorphic species, with males possessing greatly elongate first spine of first dorsal fin, reaching eighth element of second dorsal fin when appressed; when preserved first dorsal fin brown or black with white distal edge, no spots; margin of first dorsal fin concave in males while concave to straight in females; second dorsal fin with two black bands, broader one located inframarginally and the other located medially, black spots basally on membrane between dorsal fin elements; pelvic fin with prominent frenum and inner rays fused for more than half of length. D1 modally IX; D2 modally I,12; A modally I,13; caudal fin rays modally 15 segmented rays, with first and last two rays unbranched; 62-67 lateral scale rows; 18-24 predorsal scales .: fusiform / normal.

🌀 Behaviour

Behavioural data for Pearse's mudskipper is currently being reviewed.

🦐 Diet

Diet information for Pearse's mudskipper is currently being compiled.

🥚 Reproduction

Reproduction data for Pearse's mudskipper is currently being compiled.

🌍 Habitat & Distribution

Marine; brackish; demersal; amphidromous . Tropical Indian Ocean: India.

🌿 Ecology

Zone Preferences
🌊 Marine 🌿 Brackish ⬇️ Benthic
Migration
Amphidromous
Trophic Level
3.2±0.4

📐 Morphometrics

Length–Weight Relationship: W = 0.01047 × L2.92 (TL)
Max TL
10cm
Dorsal Spines
10
Dorsal Rays
12
Anal Spines
1
Anal Rays
13

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

🛡️ Conservation Assessment

IUCN Category
Data Deficient
Assessment Date
2017

📊 Population Risk & Fisheries

Population Resilience
High
Minimum doubling time
Fishing Vulnerability
13.00/100
Low vulnerability
Trophic Level
3.2
Predator
Body Shape
Fusiform / normal
Climate Zone
Tropical
Described By
Hamilton, 1822

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