Heterandria formosa

Least Killifish

A tiny livebearing fish represented historically in the Freshwater Lake, suited to slow shallow water where it can graze lower-level material and hunt small invertebrates.

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Identity & Origin +

Common Name: Least Killifish
Scientific Name: Heterandria formosa
Realm: Freshwater
Biome: Freshwater Lake

Population Dynamics +

Current Estimated Population: No current active population confirmed in the reviewed public-graph evidence.
Population Status: Uncertain

Section Notes

Least Killifish is retained as a historical/cautious Freshwater Lake node associated with introduced freshwater life and later habitat-benefit context. The reviewed evidence does not support a current active fish population claim.

Trophic Ecology +

Trophic Level: Omnivore
Feeding Niche / Method: Grazing and active predation
Dietary Inputs: Algae, plant material, detritus, and small invertebrates

Section Notes

Trophic classification is Omnivore. Food-web role: Algae grazer and small-invertebrate predator. Feeding method: Grazing and active predation. Dietary inputs: Algae, plant material, detritus, and small invertebrates

Environmental Tolerances +

Life Cycle & Reproduction +

System Reproduction Status: Not confirmed in the system; livebearing biology is noted by identity, but no current recruitment claim is made.

Ecological Role & Symbiosis +

Freshwater

A still freshwater habitat where submerged plants, tiny grazers, shrimp, snails, and crayfish are rebuilding the lake's food web after fish pressure changed.

Least Killifish

Visual Data Unavailable

Section Notes

Section Notes

Classification Pending

Biomes This Species Lives In

Freshwater Lake

Creeping Primrose Willow Turns From Solution to Problem

Wild Water Spangles Bring New Freshwater Life and Risk

Least Killifish

Visual Data Unavailable

Biomes This Species Lives In

Creeping Primrose Willow Turns From Solution to Problem

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