Species description

Care, breeding and tankmates

Fish profile

Temperament

Semi-aggressive

This catfish is highly peaceful and non-aggressive, making it an excellent addition to many community setups. They are nocturnal and secretive, meaning they will spend the day hidden and only become active after the lights go out. While peaceful towards tankmates of appropriate size, they are opportunistic feeders and might swallow very tiny fry or micro-fish. They do not show territorial aggression towards other bottom-dwellers, provided there are enough hiding spots for everyone.

Diet

Omnivore

Agamyxis pectinifrons is an omnivore with a strong preference for protein-rich foods. In the wild, they consume insects, larvae, and organic detritus from the riverbed. In captivity, they eagerly accept sinking pellets, tablet foods, and frozen options like bloodworms, brine shrimp, and tubifex. It is important to ensure that food actually reaches the bottom of the tank, as faster-swimming surface dwellers may consume everything before the catfish emerge.

Life expectancy

10-20 years

In a well-maintained aquarium, the Spotted Raphael Catfish is exceptionally long-lived, often reaching between ten and fifteen years of age. Some well-cared-for specimens have even been documented to live for over twenty years in captivity. Achieving such a long lifespan requires stable water parameters, a stress-free environment, and a balanced diet. Their longevity makes them a long-term commitment for any aquarium hobbyist.

Sex ratio

Group

There is no strict sex ratio required for Agamyxis pectinifrons as they are not aggressive toward their own kind. They are highly gregarious fish and are much more active and less stressed when kept in groups of five or more specimens. If kept alone, they tend to remain permanently hidden and may fail to thrive. Therefore, stocking them as a social group rather than focusing on male-to-female ratios is the best practice.

Feeding frequency

Once daily

Since they are nocturnal, it is best to feed these catfish once a day, shortly after the aquarium lights are turned off for the evening. Feeding them during the day is rarely successful, as they will remain hidden and the food may rot or be eaten by others. Offering food at night aligns with their natural foraging behavior and ensures they get adequate nutrition. A consistent daily feeding schedule helps maintain their health and prevents overfeeding.

Bioload

Medium

The Spotted Raphael Catfish has a medium biological footprint due to its size of up to fifteen centimeters and its group-living habits. While they are relatively sedentary, a group of these catfish will produce a notable amount of waste that requires efficient filtration. A canister filter or high-quality power filter combined with weekly water changes is recommended to keep the substrate clean. Proper maintenance of the gravel or sand is crucial, as they spend their time on the bottom where organic debris accumulates.

Flow

Moderate

This species prefers slow to moderate water flow, reflecting their natural slow-moving river habitats in the Amazon basin. Heavy or turbulent currents should be avoided, as they can cause stress and make it difficult for these heavy-bodied fish to navigate. A gentle current that circulates oxygen and distributes heat throughout the tank is ideal. Hiding places shielded from direct water flow will provide them with comfortable resting areas.

Jump risk

No

Reproduction

Oviparous

Breeding the Spotted Raphael Catfish in a home aquarium is exceptionally difficult and rarely achieved by hobbyists. In nature, they are egg-scatterers that spawn during the rainy season, laying adhesive eggs among dense vegetation or roots. Most specimens available in the trade are either wild-caught or bred commercially using hormone injections. Successfully triggering spawning in captivity without hormones requires precise manipulation of water parameters and environmental cues that are difficult to replicate.

Compatibility & tankmates

Peaceful

They are highly compatible with a wide variety of medium to large, peaceful community fish. Ideal tankmates include larger tetras, barbs, cichlids, gouramis, and other peaceful catfish of similar size. Extremely small fish, such as newborn fry or tiny shrimp, should be avoided as they may be eaten during the night. They can also be kept with their own species in groups, which actually encourages more natural and visible behavior.

Tank level

Bottom

This species is strictly a bottom-dwelling fish that spends almost all daylight hours hiding in caves, PVC pipes, or dense root structures near the substrate. During the night, they may venture slightly into the lower-middle zones of the water column to search for food, especially if driftwood reaches upward. However, their primary swimming and resting activities remain close to the bottom of the aquarium. Providing a soft sandy substrate is essential to protect their sensory barbels while they forage at this level.