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

💧 Freshwater Least Concern 🐠 Aquarium 🌡️ Tropical

Placidochromis Platyrhynchos

Placidochromis platyrhynchos Hanssens, 2004
Max Length
10 cm
Max Weight
-
Lifespan
-
Trophic Level
3.3
Depth
74–147 m
Climate
Tropical
Resilience
High
Vulnerability
15.00/100
Typical Length
-
Depth Zone
-

📖 Overview

Placidochromis Platyrhynchos (Placidochromis platyrhynchos) is a ray-finned fish of the family Cichlidae. It inhabits freshwater waters. This species can reach a maximum total length of 10 cm. It occurs at depths between 74 and 147 metres. With a trophic level of 3.3, it is a low-level carnivore, feeding on invertebrates and small organisms. It is assessed as Least Concern on the IUCN Red List.

Scientific Name
Placidochromis platyrhynchos
Authority
Hanssens, 2004
Habitat
Freshwater
Climate
Tropical
Body Shape
Elongated
IUCN Status
LC
Max Length
10 cm
Depth Range
74–147 m
Trophic Level
3.3
Resilience
High
Vulnerability
15.00/100
Salinity
0–0.5 ppt

🐟 Physical Description

Dorsal spines (total): 15 - 16; Dorsal soft rays (total): 8 - 10; Anal spines: 3; Anal soft rays: 8 - 9. Diagnosis: differs from the other very elongate species (with body depth equal to or less than 31.0% SL) by its wide and horizontally flattened snout, greater body size (7.95-10.00cm versus 7.45 or less) and the absence of scales on the cheek; 6 vertical bars below the dorsal fin; snout 31.3-35.1 % head length; premaxillary pedicel 28.0-30.5 % head length; 3/2 or more inner tooth rows in oral jaws; lower jaw length 40.3-43.6% head length; head 36.3-38.3 %SL . : elongated.

🌀 Behaviour

Behavioural data for Placidochromis Platyrhynchos is currently being reviewed.

🦐 Diet

aquatic invertebrates
small fish
algae
detritus

🥚 Reproduction

🐣 Oviparous 👄 Mouth Brooder 🛡️ Egg Guarder
Spawning Season
spring
Spawn Location
Substrate
Fertilization
External

🌍 Habitat & Distribution

Freshwater; benthopelagic; depth range 74 - 147 m . Tropical endemic to Lake Malawi, present in Malawi and Tanzania (Ref.

🌿 Ecology

Zone Preferences
💧 Freshwater
Trophic Level
3.3±0.4

📐 Morphometrics

Length–Weight Relationship: W = 0.00389 × L3.12 (TL)
Max TL
10cm
Dorsal Spines
16
Dorsal Rays
9
Anal Spines
3
Anal Rays
9

🌡️ Water Parameters & Tolerance

Salinity Range
0–0.5ppt

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2018

📊 Population Risk & Fisheries

Population Resilience
High
Minimum doubling time
Fishing Vulnerability
15.00/100
Low vulnerability
Trophic Level
3.3
Predator
Body Shape
Elongated
Climate Zone
Tropical
Described By
Hanssens, 2004

👥 Community & Contribute

Aquareap Community Observations
0 Observations logged on Aquareap

No observations yet - be the first to log one!

View all observations for Placidochromis Platyrhynchos ↗
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.