New 🐟 Mercury Safety Guide & Omega-3 Rankings Updated for 2026. View Omega-3 Rankings →

🌊 Marine Least Concern 🐠 Aquarium 🌡️ Tropical

Doryrhamphus Janssi

Doryrhamphus janssi (Herald & Randall, 1972)
Max Length
14 cm
Max Weight
-
Lifespan
-
Trophic Level
3.9
Depth
0–35 m
Climate
Tropical
Resilience
High
Vulnerability
13.00/100
Typical Length
-
Depth Zone
reef

📖 Overview

Doryrhamphus Janssi (Doryrhamphus janssi), first described by (Herald & Randall, 1972) is a small fish in the family Syngnathidae (order Syngnathiformes). Adults typically reach 14.00 cm in maximum length. It inhabits marine coastal and open-ocean environments. Recorded depth range: 0 to 35 metres. It occurs in Tropical waters. It feeds on a mix of small fish and invertebrates as a mid-level predator. The species largely solitary in behaviour. On the IUCN Red List, it is classified as Least Concern.The species is kept in the aquarium hobby. Care requirements and behaviour align broadly with other Syngnathidae kept in the hobby.

Scientific Name
Doryrhamphus janssi
Authority
(Herald & Randall, 1972)
Habitat
Marine
Climate
Tropical
IUCN Status
LC
Max Length
14 cm
Depth Range
0–35 m
Latitude
29°S – 19°N
Trophic Level
3.9
Resilience
High
Vulnerability
13.00/100
Salinity
30–40 ppt

🔬 Taxonomy

🐟 Physical Description

Physical description for Doryrhamphus Janssi is currently being compiled.

🌀 Behaviour

Behavioural data for Doryrhamphus Janssi 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

Habitat and distribution data for Doryrhamphus Janssi is currently being compiled.

🌿 Ecology

Zone Preferences
🌊 Marine 🪸 Reef Associated
Trophic Level
3.9±0.5
🧍 Solitary

📐 Morphometrics

Length–Weight Relationship: W = 0.00095 × L3.05 (TL)
Max TL
14cm
Dorsal Rays
24
Anal Rays
4

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2016

📊 Population Risk & Fisheries

Population Resilience
High
Minimum doubling time
Fishing Vulnerability
13.00/100
Low vulnerability
Trophic Level
3.9
Predator
Climate Zone
Tropical
Latitude Range
19°N – 29°S
Described By
(Herald & Randall, 1972)

🌐 Names & Taxonomy

Scientific Synonyms

Scientific Name Author Year Status
Dentirostrum janssi Herald & Randall 1972 Synonym
Doryramphus janssi Herald & Randall 1972 Synonym
Dunckerocampus janssi Herald & Randall 1972 Synonym

🗺️ Global Occurrence Map

Occurrence records from the Global Biodiversity Information Facility (GBIF) - 5 records indexed .

Occurrence density from GBIF View GBIF records ↗

👥 Community & Contribute

Aquareap Community Observations
0 Observations logged on Aquareap

No observations yet - be the first to log one!

View all observations for Doryrhamphus Janssi ↗
Suggest an Edit

Spotted incorrect or outdated data? Submit a correction and our editorial team will review it. Approved edits go live within 48 hours.

Link to a scientific paper, FishBase, or other authoritative source
Report an Issue

Found a factual error, broken data, or inappropriate content? Let us know and we will investigate promptly.