Helcogramma Billi
📖 Overview
Adults live on rock surfaces and under ledges; common at depths less than 10 m . Eggs are hemispherical and covered with numerous sticky threads that anchor them in the algae on the nesting sites . Larvae are planktonic which occur primarily in shallow, nearshore waters .
🔬 Taxonomy
🐟 Physical Description
Dorsal spines (total): 16 - 17; Dorsal soft rays (total): 9 - 11; Anal spines: 1; Anal soft rays: 17 - 20; Vertebrae: 35 - 36. Diagnosis: Dorsal fin III + XIII+ 10-11, second fin twice height of first in males (Comoro Is.); anal fin I + 19-20; pectoral rays 16 (2+7+7); pelvic fin I, 2, spine short and hidden, segmented rays simple, partially united by membrane. Vertebrae 10 + 25-26. LL total lateral scales 38-39, pored series 19-25 (121) scales, terminates at caudal fin base; nape with scales, bases of caudal and anterior of anal fin scaleless. Mandibular pores 2-3+1+2-3. Head length 3.4 in SL; eye 2.8; maxilla 2.2 in HL. Body with 5 H-shaped bars; dorsal, anal and caudal fins pigmented with spots or stripes. Live color not known but in alcohol females and juveniles are paler than males .: elongated.
🌀 Behaviour
Behavioural data for Helcogramma Billi is currently being reviewed.
🦐 Diet
🥚 Reproduction
🌍 Habitat & Distribution
Marine; demersal; depth range 0 - 10 m . Tropical Indian Ocean: Sri Lanka; possibly also in nearby areas.
🌿 Ecology
📐 Morphometrics
🌡️ Water Parameters & Tolerance
🛡️ Conservation Assessment
📊 Population Risk & Fisheries
🔍 Similar Species
👥 Community & Contribute
No observations yet - be the first to log one!
View all observations for Helcogramma Billi ↗Spotted incorrect or outdated data? Submit a correction and our editorial team will review it. Approved edits go live within 48 hours.
Found a factual error, broken data, or inappropriate content? Let us know and we will investigate promptly.