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🌊 Marine Least Concern 🐠 Aquarium 🌡️ Tropical

Periophthalmus Variabilis

Periophthalmus variabilis Eggert, 1935
Max Length
7 cm
Max Weight
-
Lifespan
-
Trophic Level
3.2
Depth
-
Climate
Tropical
Resilience
-
Vulnerability
10.00/100
Typical Length
-
Depth Zone
demersal

📖 Overview

Periophthalmus Variabilis (Periophthalmus variabilis), first described by Eggert, 1935 is a small fish in the family Gobiidae (order Gobiiformes). Adults typically reach 7.00 cm in maximum length. It inhabits marine coastal and open-ocean environments. It occurs in Tropical waters. It is broadly omnivorous, taking invertebrates, plant matter, and detritus. On the IUCN Red List, it is classified as Least Concern.The species is kept in the aquarium hobby. Care requirements and behaviour align broadly with other Gobiidae kept in the hobby.

Scientific Name
Periophthalmus variabilis
Authority
Eggert, 1935
Habitat
Marine
Climate
Tropical
Body Shape
Fusiform / normal
IUCN Status
LC
Max Length
7 cm
Trophic Level
3.2
Vulnerability
10.00/100
Salinity
30–40 ppt

🐟 Physical Description

Dorsal spines (total): 9 - 12; Dorsal soft rays (total): 11 - 12; Anal spines: 1; Anal soft rays: 10 - 12. This species is characterized by the following: first dorsal fin pattern and coloration variable between individuals, typically, first dorsal fin rounded, moderate height, white margin, and one brown or black stripe inframarginally; the first spine of first dorsal fin always longest, rarely elongated; rounded to elliptical red-orange spots present ventral to inframarginal stripe, turning black in preservative; the second dorsal fin with yellow-orange margin and one black band inframarginally, rounded red-orange spots present on membrane between elements at base, turning black in preservative; live color with caudal and pectoral fins red-orange; prominent pelvic frenum, inner rays fused for less than half their length; ventero-posterior branchiostegal membrane dusky; D1 modally X; D2 modally I,12; A I,11; caudal fin modally 14 segmented rays; 48-60 lateral scales; 17-22 predorsal scales .: fusiform / normal.

🌀 Behaviour

Behavioural data for Periophthalmus Variabilis 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; brackish; demersal. Tropical

🌿 Ecology

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

📐 Morphometrics

Length–Weight Relationship: W = 0.01023 × L2.9 (TL)
Max TL
7cm
Dorsal Spines
11
Dorsal Rays
12
Anal Spines
1
Anal Rays
11

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2024

📊 Population Risk & Fisheries

Fishing Vulnerability
10.00/100
Low vulnerability
Trophic Level
3.2
Predator
Body Shape
Fusiform / normal
Climate Zone
Tropical
Described By
Eggert, 1935

🦠 Common Diseases

The following diseases are known to affect Periophthalmus Variabilis.

👥 Community & Contribute

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