Oil Catfish

Siluriformes sp.

Oil Catfish (Siluriformes sp.) — Easy care, Peaceful, under Catfish & Cory. Minimum tank in the app: 14.5 US gal min; aim for 73–81°F and pH 6–7.8. The Oil Catfish is an engaging option for aquarists seeking a peaceful bottom-dweller, particularly in community tanks.

Oil Catfish (Siluriformes sp.) in a planted freshwater aquarium
Care levelEasy
TemperamentPeaceful
Min tank size14.5 US gal min
pH range6–7.8
Temperature73–81°F
Max size2.4 in (6.0 cm)
Captive lifespan5–10 years
SchoolingNo

Captive lifespan reflects typical experience in a home aquarium, not maximum recorded age; genetics, sourcing, and care vary.

Natural distribution

Mostly South America / Africa

  • South America
  • Africa

Regional colours match the stocking calculator’s origin map.

Oil Catfish Tank Setup

Create a balanced environment with smooth substrate to protect their delicate barbels and include caves or driftwood to provide cover. Moderate water flow suits their natural habitat, and dim lighting can help them feel secure and encourage natural behaviors.

What Do Oil Catfishs Eat?

As opportunistic feeders, Oil Catfish are efficient at scavenging but can be outcompeted by faster feeders if not given adequate time to eat. Ensure a varied diet to maintain their health and vibrancy, as dietary deficiencies can lead to dull coloration.

Oil Catfish Tank Mates

Ideal companions include similarly sized, non-aggressive species that occupy different water levels, such as small tetras or rasboras. Avoid larger or aggressive fish that may intimidate them; intraspecies interactions are generally harmonious, as they do not exhibit territoriality.

Are Oil Catfishs Good for Beginners?

In App-aquatic we file this under easy care. That still means a cycled tank, realistic stocking, and parameters that do not swing every weekend. Aquarists often underestimate the importance of cover and hiding spots, leading to stress in these sensitive fish. neglecting to monitor and maintain stable water parameters can result in health issues due to their specific pH and temperature requirements.

Building a community? Run the full list through the stocking calculator before you add anything else.

Log tests and reminders in App-aquatic—free, same data you see here.