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🌊 Marine Least Concern 🌡️ Tropical

Lembeh rockskipper

Praealticus semicrenatus Chapman, 1951
Max Length
6 cm
Max Weight
-
Lifespan
-
Trophic Level
2
Depth
-
Climate
Tropical
Resilience
High
Vulnerability
12.00/100
Typical Length
-
Depth Zone
demersal

📖 Overview

Facultative air-breathing ; Adults occur in rocky shores . Oviparous. Eggs are demersal and adhesive , and are attached to the substrate via a filamentous, adhesive pad or pedestal . Larvae are planktonic, often found in shallow, coastal waters .

Scientific Name
Praealticus semicrenatus
Authority
Chapman, 1951
Habitat
Marine
Climate
Tropical
Body Shape
Elongated
IUCN Status
LC
Max Length
6 cm
Trophic Level
2
Resilience
High
Vulnerability
12.00/100
Salinity
30–40 ppt

🐟 Physical Description

Dorsal spines (total): 13; Dorsal soft rays (total): 18 - 19; Anal spines: 2; Anal soft rays: 19 - 20. Color in life unknown. Preserved specimen with alternating light and dark bands below eye, dark blotch behind eye and on upper operculum, and around 7-8 bifurcate dark bars on body. Dorsal fin deeply notched; pectoral rays typically 15; segmented caudal rays typically 13-14, middle 6-7 unbranched; pinnately branched supraorbital tentacle; nape cirri absent; posterior rim of anterior nostril with small cirrus (typically unbranched); upper lip margin laterally crenulate; lower lip margin smooth; male with occipital crest; last dorsal ray and caudal peduncle connected by membrane; elongate body, depth at anal-fin origin ca. 6.6-8.1 in SL. Maximum length 6 cm TL .: elongated.

🌀 Behaviour

Behavioural data for Lembeh rockskipper is currently being reviewed.

🦐 Diet

Diet information for Lembeh rockskipper is currently being compiled.

🥚 Reproduction

🐣 Oviparous

Oviparous, distinct pairing .

🌍 Habitat & Distribution

Marine; demersal. Tropical Central Pacific: Indonesia.

🌿 Ecology

Zone Preferences
🌊 Marine ⬇️ Benthic
Trophic Level
2

📐 Morphometrics

Length–Weight Relationship: W = 0.00759 × L3 (TL)
Max TL
6cm
Dorsal Spines
13
Dorsal Rays
19
Anal Spines
2
Anal Rays
20

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2013

📊 Population Risk & Fisheries

Population Resilience
High
Minimum doubling time
Fishing Vulnerability
12.00/100
Low vulnerability
Trophic Level
2
Omnivore / Planktivore
Body Shape
Elongated
Climate Zone
Tropical
Described By
Chapman, 1951

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