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🌊 Marine Data Deficient 🌡️ Tropical

Majungaichthys Simplex

Majungaichthys simplex Schwarzhans & Møller, 2007
Max Length
3.7 cm
Max Weight
-
Lifespan
-
Trophic Level
3.2
Depth
-
Climate
Tropical
Resilience
High
Vulnerability
10.00/100
Typical Length
-
Depth Zone
demersal

📖 Overview

Majungaichthys Simplex (Majungaichthys simplex), first described by Schwarzhans & Møller, 2007 is a tiny fish. Adults typically reach 3.70 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 Data Deficient.

Scientific Name
Majungaichthys simplex
Authority
Schwarzhans & Møller, 2007
Habitat
Marine
Climate
Tropical
IUCN Status
DD
Max Length
3.7 cm
Trophic Level
3.2
Resilience
High
Vulnerability
10.00/100
Salinity
30–40 ppt

🔬 Taxonomy

Genus
Majungaichthys
Majungaichthys
Species
Majungaichthys Simplex
Majungaichthys simplex

🐟 Physical Description

Dorsal soft rays (total): 71 - 75; Anal soft rays: 56 - 62; Vertebrae: 43 - 44. This species possess the following set of characters: anterior nostril low on snout, 1/4 the distance from upper lip to aggregate distance to anterior margin of eye; copulatory organ of male with 2 pairs of small pseudoclaspers, outer pseudoclasper simple, flap-like, and not much larger than simple flap-like inner pseudoclasper; small, size not much exceeding 4.0 cm SL; 12 precaudal vertebrae, 43-44 total vertebrae; D 71-79; V in D 1.9-2.1; scale patch on cheek only, none on operculum; presence of upper preopercular pore; otolith moderately elongate, its length to height 2.1-2.2, sulcus short with otolith length to sulcus length 1.9 and slightly inclined (5°), colliculi fused, sometimes incomplete with indication of distinction of ostial and caudal colliculi; maxilla expanded posteroventrally .

🌀 Behaviour

Behavioural data for Majungaichthys Simplex 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. Tropical Indian Ocean: Madagascar, and probably Mauritius.

🌿 Ecology

Zone Preferences
🌊 Marine ⬇️ Benthic
Trophic Level
3.2±0.5

📐 Morphometrics

Length–Weight Relationship: W = 0.00468 × L3.03 (TL)
Max TL
3.7cm
Dorsal Rays
73
Anal Rays
59
Vertebrae
44

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

🛡️ Conservation Assessment

IUCN Category
Data Deficient
Assessment Date
2019

📊 Population Risk & Fisheries

Population Resilience
High
Minimum doubling time
Fishing Vulnerability
10.00/100
Low vulnerability
Trophic Level
3.2
Predator
Climate Zone
Tropical
Described By
Schwarzhans & Møller, 2007

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