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💧 Freshwater Vulnerable 🐠 Aquarium 🌡️ Tropical

Glossogobius Macrocephalus

Glossogobius macrocephalus Hoese & Allen, 2015
Max Length
11.2 cm
Max Weight
-
Lifespan
-
Trophic Level
3.5
Depth
-
Climate
Tropical
Resilience
High
Vulnerability
25.00/100
Typical Length
-
Depth Zone
-

📖 Overview

Glossogobius Macrocephalus (Glossogobius macrocephalus), first described by Hoese & Allen, 2015 is a small fish in the family Gobiidae (order Gobiiformes). Adults typically reach 11.20 cm in maximum length. It inhabits freshwater systems including rivers, streams, and lakes. 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 Vulnerable.The species is kept in the aquarium hobby. Care requirements and behaviour align broadly with other Gobiidae kept in the hobby.

Scientific Name
Glossogobius macrocephalus
Authority
Hoese & Allen, 2015
Habitat
Freshwater
Climate
Tropical
Body Shape
Elongated
IUCN Status
VU
Max Length
11.2 cm
Trophic Level
3.5
Resilience
High
Vulnerability
25.00/100
Salinity
0–0.5 ppt

🐟 Physical Description

Dorsal spines (total): 6 - 7; Dorsal soft rays (total): 9 - 10; Anal spines: 1; Anal soft rays: 8; Vertebrae: 28. Diagnosis: Preoperculum without a spine, but with small flat projection adjacent to lower preopercular pore; mental fraenum low with short lateral lobes; mouth small; reaching to below anterior margin of eyes; jaws forming an angle of 40–50° with body axis; upper margin of upper jaw in line with lower margin of pupil; head robust and large, cheeks slightly bulbose and tapering; interorbital narrow, less than eye length; predorsal area scaled forward to just behind eye, with a narrow naked patch between and behind eyes; cheek naked; operculum naked; pectoral base with 1–3 vertical rows of scales; prepelvic area about 3/4 scaled in 7–8 rows, naked anteriorly; belly largely scaled, with a very small naked patch behind pelvic insertion; 1st dorsal fin spine 3–5 extending beyond other spines when fin depressed; 1st dorsal fin with black spot posteriorly on membrane surrounding 6th dorsal spine, spot faint in female; pelvic fin thin, length much greater than width, reaching anus; 2nd dorsal rays I,9–10; anal rays I,8; pectoral rays 17–18; longitudinal scale count 30–31; predorsal scale count 15–18; transverse scale count (TRB) 9.5–10.5; gill rakers on outer face of 1st arch 1+1+6–8=8–10; lower gill rakers on outer face of 2nd arch 6–7; branched caudal rays 14–15; vertebrae 12+16=28; papillae, Line 1 (before nasal pore) composed of 2 rows of papillae (sometimes incomplete); line 2 (between nasal pores) composed of a single row of papillae usually continuous across snout; line 5 (suborbital) composed of single row of papillae (double in 1 specimens on 1 side of head below infraorbital pore), joining line 7 below posterior nostril; line 6 (suborbital branch) absent; lines 7, 9, 10 (LL cheek rows) composed of a single row of papillae, but irregular anteriorly appearing double, reaching to posterior preopercular margin; lines 8 and 11 (LT row) reaching just short of posterior preopercular margin; line 12 (outer POP–mandibular) composed of single row of papillae, appearing double along lips, without gap at end of lips; line 13 (inner POP–mandibular) composed of 2–3 rows of papillae; line 20 (opercular VT row) composed of single row of papillae dorsally, and double ventrally; line 21 (upper opercular OT) composed of single row of papillae, strongly curved ventrally meeting or almost meeting line 22; line 22 (lower opercular OT) composed of single row of papillae, curving upward along posterior opercular margin; several vertical papillae rows on belly; a single curved line anteriorly on most body scales (often obscure dorsally and posteriorly); chin with an oval patch of papillae behind mental fraenum, with a notch posteromedially without papillae . : elongated.

🌀 Behaviour

Behavioural data for Glossogobius Macrocephalus is currently being reviewed.

🦐 Diet

aquatic invertebrates
small fish
algae
detritus

🥚 Reproduction

🐣 Oviparous
Spawning Season
spring
Spawn Location
Substrate
Fertilization
External

🌍 Habitat & Distribution

Freshwater; benthopelagic. Tropical

🌿 Ecology

Zone Preferences
💧 Freshwater
Trophic Level
3.5±0.4

📐 Morphometrics

Length–Weight Relationship: W = 0.00741 × L3.09 (TL)
Max TL
11.2cm
Dorsal Spines
7
Dorsal Rays
10
Anal Spines
1
Anal Rays
8
Vertebrae
28

🌡️ Water Parameters & Tolerance

Salinity Range
0–0.5ppt

🛡️ Conservation Assessment

IUCN Category
Vulnerable
Assessment Date
2019

📊 Population Risk & Fisheries

Population Resilience
High
Minimum doubling time
Fishing Vulnerability
25.00/100
Low vulnerability
Trophic Level
3.5
Predator
Body Shape
Elongated
Climate Zone
Tropical
Described By
Hoese & Allen, 2015

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