🪐 View in 3D Galaxy 📏 View on 3D Scale Stage

🧬 Biological Classification (Kingdom to Species)Oncorhynchus mykiss

Kingdom

Animalia

Phylum

Chordata

Class

Actinopteri

Order

Salmoniformes

Family

Salmonidae

Genus

Oncorhynchus

Species

Oncorhynchus mykiss

Actinopteri🥩 Carnivore

Rainbow trout

Oncorhynchus mykiss (Rainbow trout · ニジマス)

🛡️ Conservation Status (IUCN Red List)LC (Least Concern)

DDData Deficient

LCLeast Concern

NTNear Threatened

VUVulnerable

ENEndangered

CRCritically End.

EWExtinct in Wild

EXExtinct

Geological Era

Extant

Diet

Carnivore

Length · Height

1.2m · No data

Mass · Top Speed

25.4kg · No data

Habitat & Fossil Locality

Clear, cold mountain streams, rivers, and lakes; the sea-run form (steelhead) also inhabits coastal seas (depths of 0–200 m)

💡 Everyday Comparisons for Size, Mass & Speed

💡 Its average weight of 4 kg is slightly lighter than a 5 kg bag of rice (Comparison).
💡 Its maximum length of 120 cm is about the height of a 1st-grade elementary school child (Comparison).
💡 As one of the world's most popular game fishes, it has been introduced almost worldwide (ADW).
💡 Commercial aquaculture is also widely practiced (FishBase).

Reference standards: coach bus ~12 m, mid-size car ~4.9 m, compact car ~1 t, basketball hoop 3.05 m, credit card 8.56 cm.

📊 Mass & Speed Index (0–100)

⚖️ Mass Index (Blue Whale ~190 t = 100, log scale)53

Site-computed relative index from recorded values; not a formal scientific metric.

#무지개송어#Oncorhynchus mykiss

📖 1. Overview

The rainbow trout is a salmonid fish native to the Pacific side of North America that has spread worldwide for angling and aquaculture. Its sea-run form is called steelhead.

🦴 2. Anatomy & Morphology

Its body is streamlined with a silvery underside and a pinkish-red stripe along the upper-middle flank. Most individuals have black spots above the lateral line and lack teeth at the base of the tongue.

🔍 3. Ecology & Behavior

It feeds on insects and fish. The female digs a nest (redd) in a gravel bed with her anal fin, lays her eggs, and covers them, while steelhead have a strong homing instinct to return to their natal stream.