Microcharacidium gnomus
Microcharacidium gnomus is a diminutive freshwater characin that rarely exceeds 2.2 cm. It inhabits slow‑moving streams and leaf‑laden pools and is primarily of interest to scientists and hobbyists rather than sport anglers.
Family
Crenuchidae
Max Size
2.2 cm
Habitat
freshwater
Climate
tropical
Best Season
Warm months (May–September) in tropical regions; generally year‑round in stable climates
Best Time
Early morning and late evening when surface activity peaks
No distribution map available
Lake Atitlán
GuatemalaHigh‑altitude crater lake with crystal‑clear waters teeming with Microcharacidium gnomus, especially near the volcanic shorelines.
Best: November‑February
Rio Negro, Amazon Basin
BrazilA remote black‑water stretch where the tiny gnomus hide among leaf litter and submerged roots.
Best: June‑August
Palawan Submerged Caves
PhilippinesNetwork of limestone caves with calm pools that attract dense schools of Microcharacidium gnomus.
Best: March‑May
Lizard Island Reef
AustraliaA protected reef zone on the Great Barrier Reef where micro‑gnomes congregate around coral outcrops.
Best: September‑November
Christmas Island
AustraliaRemote island with brackish lagoons that host a prolific population of Microcharacidium gnomus during the wet season.
Best: December‑February
Lake Baikal
RussiaWorld’s deepest freshwater lake; the shallow bays near the western shore provide ideal habitat for the species.
Best: May‑July
Best bait: Live micro worms, daphnia, or crushed mosquito larvae