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

💧 Freshwater Least Concern 🐠 Aquarium 🌡️ Temperate

Sacramento blackfish

Orthodon microlepidotus Ayres, 1854
Max Length
55 cm
Max Weight
-
Lifespan
5 yrs
Trophic Level
2
Depth
-
Climate
Temperate
Resilience
Very low
Vulnerability
64.00/100
Typical Length
35 cm
Depth Zone
-

📖 Overview

Adults occur in lakes, backwaters and sluggish pools of small to large rivers. Usually found in warm turbid water . Migratory behaviour is undetermined .

Scientific Name
Orthodon microlepidotus
Authority
Ayres, 1854
Habitat
Freshwater
Climate
Temperate
Body Shape
Fusiform / normal
IUCN Status
LC
Max Length
55 cm
Lifespan
5 years
Trophic Level
2
Resilience
Very low
Vulnerability
64.00/100

🔬 Taxonomy

Kingdom
Animalia
Phylum
Chordata
Class
Teleostei
Teleostei
Order
Cypriniformes
Cypriniformes
Family
Cyprinidae
Cyprinidae
Genus
Orthodon
Orthodon
Species
Sacramento blackfish
Orthodon microlepidotus

🐟 Physical Description

Dorsal soft rays (total): 9 - 11. Dorsal fin with 9-11 rays; dorsal-fin origin in front of pelvic-fin origin; 90-105 scales on lateral line; wide head, flat above; slightly upturned mouth; slender, compressed body; long narrow caudal peduncle; pharyngeal teeth 0,6-6,0 or 0,6-5,0; light to dark gray above, often olive sheen; silver side .: fusiform / normal.

🌀 Behaviour

Behavioural data for Sacramento blackfish is currently being reviewed.

🦐 Diet

algae
aquatic plants
detritus

🥚 Reproduction

🐣 Oviparous
Spawning Season
spring
Spawn Location
Substrate
Fertilization
External

🌍 Habitat & Distribution

Freshwater; brackish; benthopelagic. Temperate; 39°N - 35°N North America: Sacramento-San Joaquin, Pajaro and Salinas River drainages; Clear Lake in California, USA; also Russian River, where possibly introduced; introduced to Santa Ana River in California and Humboldt River system in Nevada.

🌿 Ecology

Zone Preferences
💧 Freshwater 🌿 Brackish
Trophic Level
2±0.2

📐 Morphometrics

Length–Weight Relationship: W = 0.01148 × L3.03 (TL)
Max TL
55cm
Dorsal Rays
10

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2012

📊 Population Risk & Fisheries

Population Resilience
Very low
Minimum doubling time
Fishing Vulnerability
64.00/100
High vulnerability
Trophic Level
2
Omnivore / Planktivore
Body Shape
Fusiform / normal
Climate Zone
Temperate
Described By
Ayres, 1854

🌐 Names & Taxonomy

Language Common Names
🇬🇧English Sacramento Blackfish
🌍CES černoušek drobnošupinný
🇷🇺Russian Мелкочешуйный ортодон

Scientific Synonyms

Scientific Name Author Year Status
Endemichthys grandipinnis Hopkirk 1974 Synonym
Gila microlepidota Ayres 1854 Synonym
Leuciscus microlepidotus Ayres 1854 Synonym

🗺️ Global Occurrence Map

Occurrence records from the Global Biodiversity Information Facility (GBIF) - 45 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 Sacramento blackfish ↗
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.