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🌊 Marine Data Deficient 🌡️ Temperate

Warty handfish

Thymichthys verrucosus McCulloch & Waite, 1918
Max Length
9.3 cm
Max Weight
-
Lifespan
-
Trophic Level
3.6
Depth
-
Climate
Temperate
Resilience
-
Vulnerability
10.00/100
Typical Length
-
Depth Zone
demersal

📖 Overview

Warty handfish (Thymichthys verrucosus), first described by McCulloch & Waite, 1918 is a small fish. Adults typically reach 9.30 cm in maximum length. It inhabits marine coastal and open-ocean environments. It occurs in Temperate 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.

Scientific Name
Thymichthys verrucosus
Authority
McCulloch & Waite, 1918
Habitat
Marine
Climate
Temperate
Body Shape
Elongated
IUCN Status
DD
Max Length
9.3 cm
Trophic Level
3.6
Vulnerability
10.00/100
Salinity
30–40 ppt

🔬 Taxonomy

Genus
Thymichthys
Thymichthys
Species
Warty handfish
Thymichthys verrucosus

🐟 Physical Description

This species is distinguished by the following set of characters: esca is variable in size, length 23-57% (mean 37%) of illicium length (including esca); short to moderately elongate illicium, not thick and fleshy, without dermal spinules, length 15-27% SL, 1.9-3.4 times in head length, its base adjacent upper jaw (pre-illicial length 1.2-3.2% SL); small eye, its diameter 4.8-7.1 times in head length; body is usually densely covered with prominent, close-set, globular or fleshy warts; skin with small, widely spaced, embedded, spiny scales and variably developed dermal flaps; unicuspid or bicuspid spinules, prostrate, their tips embedded or barely visible); second dorsal-fin rays 14-18 (mainly 16-17), fin base length 60-73 (mean 66)% SL; length of second dorsal-fin spine 1.1-1.6 times length of longest ray of second dorsal fin; anal-fin rays 6-9; pectoral-fin rays usually 8; body brownish with lighter and darker blotches and spots; blackish bar on caudal peduncle and caudal-fin base that extends onto hind parts of dorsal and anal fins .: elongated.

🌀 Behaviour

Behavioural data for Warty handfish 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. Temperate South Australia.

🌿 Ecology

Zone Preferences
🌊 Marine ⬇️ Benthic
Trophic Level
3.6±0.5

📐 Morphometrics

Length–Weight Relationship: W = 0.00437 × L3.12 (TL)
Max TL
9.3cm

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

🛡️ Conservation Assessment

IUCN Category
Data Deficient
Assessment Date
2018

📊 Population Risk & Fisheries

Fishing Vulnerability
10.00/100
Low vulnerability
Trophic Level
3.6
Predator
Body Shape
Elongated
Climate Zone
Temperate
Described By
McCulloch & Waite, 1918

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