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🌊 Marine 🌡️ Temperate

Johnson’s flabby whalefish

Gyrinomimus johnsoni Su, Paxton & Ho, 2026
Max Length
31.5 cm
Max Weight
-
Lifespan
-
Trophic Level
-
Depth
0–2315 m
Climate
Temperate
Resilience
Medium
Vulnerability
28.00/100
Typical Length
-
Depth Zone
deep-water

📖 Overview

Johnson’s flabby whalefish (Gyrinomimus johnsoni), first described by Su, Paxton & Ho, 2026 is a medium-sized fish in the family Cetomimidae (order Beryciformes). Adults typically reach 31.50 cm in maximum length. It inhabits marine coastal and open-ocean environments. Recorded depth range: 0 to 2315 metres. It occurs in Temperate waters.

Scientific Name
Gyrinomimus johnsoni
Authority
Su, Paxton & Ho, 2026
Habitat
Marine
Climate
Temperate
Body Shape
Elongated
Max Length
31.5 cm
Depth Range
0–2315 m
Resilience
Medium
Vulnerability
28.00/100
Salinity
30–40 ppt

🐟 Physical Description

Vertebrae: 53 - 55. This species is distinguished from its congeners by the following set of characters: medial tooth patch on first gill arch 2-4; POP 0-2; IO 7 + 0 = 7; inner ~ 3-5 rows of teeth in the anterior jaws in diagonal rows(in specimens < ~ 150 mm SL); anterior margin of anteriormost GRI reaching near anterior margin of the copular tooth plate, often before anterior margin of copular tooth plate; cavernous tissue only surrounding anus; absence of anal lappets; absence of filaments on fourth gill arch tiny or nearly, length < 17.3% filament on first arch; cavernous tissue, when discernable, only around anus; vertebrae 30-33 + 22-24 = 53-55; dorsal-fin rays 16-19; anal-fin rays 17-20; lateral-line pores 16-19; lateral-line scales 15-18; and copular tooth plate rather slender, greatest width 3.2-4.7 in length. .: elongated.

🌀 Behaviour

Behavioural data for Johnson’s flabby whalefish 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; bathypelagic; depth range 0 - 2315 m . Temperate Central Pacific: USA.

🌿 Ecology

Zone Preferences
🌊 Marine 🌑 Deep Water

📐 Morphometrics

Max TL
31.5cm
Vertebrae
54

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

📊 Population Risk & Fisheries

Population Resilience
Medium
Minimum doubling time
Fishing Vulnerability
28.00/100
Low vulnerability
Body Shape
Elongated
Climate Zone
Temperate
Described By
Su, Paxton & Ho, 2026

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