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🌊 Marine Least Concern 🌡️ Tropical

Didymothallus Criniceps

Didymothallus criniceps Schwarzhans & Møller, 2007
Max Length
5.4 cm
Max Weight
-
Lifespan
-
Trophic Level
3.3
Depth
0–5 m
Climate
Tropical
Resilience
-
Vulnerability
10.00/100
Typical Length
-
Depth Zone
reef

📖 Overview

Some of the female specimens were observed to have 9-18 eggs in the body cavity, 2 females (of 44 mm SL) were opened and found to contain orange-coloured eggs, 1.4-1.7 mm in diameter; no reported specimens have embryos inside. This observation apparently indicate that this species is oviparous rather than viviparous, which is an assumed diagnostic character for all Bythitoidei. However, this first indication will need to be confirmed by in-life observation .

Scientific Name
Didymothallus criniceps
Authority
Schwarzhans & Møller, 2007
Habitat
Marine
Climate
Tropical
Body Shape
Elongated
IUCN Status
LC
Max Length
5.4 cm
Depth Range
0–5 m
Trophic Level
3.3
Vulnerability
10.00/100
Salinity
30–40 ppt

🔬 Taxonomy

Genus
Didymothallus
Didymothallus
Species
Didymothallus Criniceps
Didymothallus criniceps

🐟 Physical Description

Dorsal soft rays (total): 69 - 77; Anal soft rays: 52 - 61; Vertebrae: 42 - 45. This species is diagnosed by the following characters: D 69-77; A 52-61; D/A 23-26, V in D 1.9-2.1; vertebrae 12+30-33=42-45; multiple small cirri on occiput; a single (outer) pseudoclasper wing-shaped with 2 slender supporters, slightly bent, particularly the posterior one and are exactly of same length; 3-5 rows of scales on upper part of cheek, 2 rows on its lower part; otolith has a moderately pointed anterior tip and pronounced postdorsal angle, with undivided short sulcus, its centre anterior to centre of otolith, inclined with 5 to 10°, the otolith length to otolith height is 2.2, otolith length to sulcus length is 2.2-2.4 .: elongated.

🌀 Behaviour

Behavioural data for Didymothallus Criniceps 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; reef-associated; depth range 0 - 5 m . Tropical

🌿 Ecology

Zone Preferences
🌊 Marine 🪸 Reef Associated
Trophic Level
3.3±0.5

📐 Morphometrics

Length–Weight Relationship: W = 0.00389 × L3.12 (TL)
Max TL
5.4cm
Dorsal Rays
73
Anal Rays
57
Vertebrae
44

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2019

📊 Population Risk & Fisheries

Fishing Vulnerability
10.00/100
Low vulnerability
Trophic Level
3.3
Predator
Body Shape
Elongated
Climate Zone
Tropical
Described By
Schwarzhans & Møller, 2007

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