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🌊 Marine Least Concern 🐠 Aquarium 🌡️ Tropical

Kei goby

Oxyurichthys keiensis Smith, 1938
Max Length
7 cm
Max Weight
-
Lifespan
-
Trophic Level
3.5
Depth
-
Climate
Tropical
Resilience
High
Vulnerability
13.00/100
Typical Length
-
Depth Zone
demersal

📖 Overview

Kei goby (Oxyurichthys keiensis), first described by Smith, 1938 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 feeds on a mix of small fish and invertebrates as a mid-level predator. 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
Oxyurichthys keiensis
Authority
Smith, 1938
Habitat
Marine
Climate
Tropical
Body Shape
Fusiform / normal
IUCN Status
LC
Max Length
7 cm
Trophic Level
3.5
Resilience
High
Vulnerability
13.00/100
Salinity
30–40 ppt

🐟 Physical Description

Dorsal spines (total): 7; Dorsal soft rays (total): 10 - 12; Anal spines: 1; Anal soft rays: 12. This species is distinguished by the following characters: D2 12; A 13; upper jaw teeth in 2-3 rows; tongue fleshy,truncate to bifurcate, not rounded; upper lip not constricted; absence of a dark spot, with cornification or tentacle on dorsoposterior surface of the eye; anterior nares not darkly pigmented; without spots on gular membrane beneath preopercle or anterior process of quadrate; no membranous crest on nape; scales are mostly ctenoid; lateral scales 27-34; in males spines of first dorsal fin elongate, with third and fourth spines of appressed fin reaching beyond second dorsal fin to near caudal-fin base; pectoral-fin rays 20-23; males with pelvic fins dusky while centrally dusky in females; neural arches incomplete over caudal vertebrae .: fusiform / normal; Cross section: compressed.

🌀 Behaviour

Behavioural data for Kei 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; brackish; demersal. Tropical South Africa; including Seychelles and Madagascar.

🌿 Ecology

Zone Preferences
🌊 Marine 🌿 Brackish ⬇️ Benthic
Trophic Level
3.5±0.5

📐 Morphometrics

Length–Weight Relationship: W = 0.00977 × L2.99 (TL)
Max TL
7cm
Dorsal Spines
7
Dorsal Rays
11
Anal Spines
1
Anal Rays
12

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2024

📊 Population Risk & Fisheries

Population Resilience
High
Minimum doubling time
Fishing Vulnerability
13.00/100
Low vulnerability
Trophic Level
3.5
Predator
Body Shape
Fusiform / normal
Climate Zone
Tropical
Described By
Smith, 1938

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