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🌊 Marine Data Deficient 🐠 Aquarium 🌡️ Tropical

Fin-joined goby

Gobulus birdsongi Hoese & Reader, 2001
Max Length
5.8 cm
Max Weight
-
Lifespan
-
Trophic Level
3.3
Depth
13–20 m
Climate
Tropical
Resilience
High
Vulnerability
13.00/100
Typical Length
-
Depth Zone
demersal

📖 Overview

Fin-joined goby (Gobulus birdsongi), first described by Hoese & Reader, 2001 is a small fish in the family Gobiidae (order Gobiiformes). Adults typically reach 5.80 cm in maximum length. It inhabits marine coastal and open-ocean environments. Recorded depth range: 13 to 20 metres. It occurs in Tropical waters. It feeds on a mix of small fish and invertebrates as a mid-level predator. On the IUCN Red List, it is classified as Data Deficient.The species is kept in the aquarium hobby. Care requirements and behaviour align broadly with other Gobiidae kept in the hobby.

Scientific Name
Gobulus birdsongi
Authority
Hoese & Reader, 2001
Habitat
Marine
Climate
Tropical
IUCN Status
DD
Max Length
5.8 cm
Depth Range
13–20 m
Trophic Level
3.3
Resilience
High
Vulnerability
13.00/100
Salinity
30–40 ppt

🐟 Physical Description

Dorsal spines (total): 8; Dorsal soft rays (total): 13; Anal soft rays: 13; Vertebrae: 27. . This species is distinguished by the following set of characters: D2 I,11; A I,13; pectoral rays 16-18; eye small, 1.4 mm in length (2:46 and 58 mm SL); D1 connected to base of D2; pelvic interspinal membrane is very reduced; fifth pelvic ray is subequal in length to fourth ray; upper edge of the dark body stripe well above midside of body .Cross section: oval.

🌀 Behaviour

Behavioural data for Fin-joined goby 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 13 - 20 m . Tropical Central Pacific: Panama.

🌿 Ecology

Zone Preferences
🌊 Marine ⬇️ Benthic
Trophic Level
3.3±0.3

📐 Morphometrics

Length–Weight Relationship: W = 0.00741 × L3.09 (TL)
Max TL
5.8cm
Dorsal Spines
8
Dorsal Rays
13
Anal Rays
13
Vertebrae
27

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

🛡️ Conservation Assessment

IUCN Category
Data Deficient
Assessment Date
2024

📊 Population Risk & Fisheries

Population Resilience
High
Minimum doubling time
Fishing Vulnerability
13.00/100
Low vulnerability
Trophic Level
3.3
Predator
Climate Zone
Tropical
Described By
Hoese & Reader, 2001

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