UNDERGROUNDAQUARIUM
Plecos (L-number Catfish)L066Undescribed

King Tiger Pleco

Hypancistrus sp.

Also known as: L66

A scribble-patterned Hypancistrus known only by its code, L066 — still undescribed by science.

Water
Freshwater
Temperature
78–86°F
pH
6–7.5
Hardness
2–12 dGH
Max size
5.5 in
Min tank
40 gal
Temperament
Peaceful
Social
Solitary
Swim level
Bottom
Diet
Carnivore
Care level
Advanced
Lifespan
8-12 years
Breeding
Cave-spawner
Suitability
Advanced
Origin
Rio Xingu / Rio Tocantins, Brazil

The King Tiger is a perfect example of a fish the trade tracks entirely by L-number because it has no formal scientific name yet. We flag it as an undescribed 'form' rather than pretending it's a named species.