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💧 Freshwater Data Deficient 🐠 Aquarium 🌡️ Tropical

Placidochromis Longus

Placidochromis longus Hanssens, 2004
Max Length
4.9 cm
Max Weight
-
Lifespan
-
Trophic Level
3.2
Depth
95–97 m
Climate
Tropical
Resilience
High
Vulnerability
10.00/100
Typical Length
-
Depth Zone
-

📖 Overview

Placidochromis Longus (Placidochromis longus) is a ray-finned fish of the family Cichlidae. It inhabits freshwater waters. This species can reach a maximum total length of 4.9 cm. It occurs at depths between 95 and 97 metres. With a trophic level of 3.2, it is a low-level carnivore, feeding on invertebrates and small organisms. It is assessed as Data Deficient on the IUCN Red List.

Scientific Name
Placidochromis longus
Authority
Hanssens, 2004
Habitat
Freshwater
Climate
Tropical
Body Shape
Elongated
IUCN Status
DD
Max Length
4.9 cm
Depth Range
95–97 m
Trophic Level
3.2
Resilience
High
Vulnerability
10.00/100
Salinity
0–0.5 ppt

🐟 Physical Description

Dorsal spines (total): 16 - 17; Dorsal soft rays (total): 11; Anal spines: 3; Anal soft rays: 9. Diagnosis: small elongate species with 8-9 vertical bars below the dorsal fin; lachrymal shallow, 12.3-13.5 % head length; head shape normal; 1/1 inner tooth rows in oral jaws; snout 24.1-24.7 % head length; mouth 41.8-42.6 % head length . : elongated.

🌀 Behaviour

Behavioural data for Placidochromis Longus 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 95 - 97 m . Tropical endemic to Lake Malawi, only known from Lukoma Bay in Tanzania (Ref.

🌿 Ecology

Zone Preferences
💧 Freshwater
Trophic Level
3.2±0.4

📐 Morphometrics

Length–Weight Relationship: W = 0.00389 × L3.12 (TL)
Max TL
4.9cm
Dorsal Spines
17
Dorsal Rays
11
Anal Spines
3
Anal Rays
9

🌡️ Water Parameters & Tolerance

Salinity Range
0–0.5ppt

🛡️ Conservation Assessment

IUCN Category
Data Deficient
Assessment Date
2014

📊 Population Risk & Fisheries

Population Resilience
High
Minimum doubling time
Fishing Vulnerability
10.00/100
Low vulnerability
Trophic Level
3.2
Predator
Body Shape
Elongated
Climate Zone
Tropical
Described By
Hanssens, 2004

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