Ornate Pimelodus

Adult specimens of this catfish can reach a length of about 12 cm. Their body has a silvery hue, adorned with contrasting black spots that extend onto the fins and tail. One of their characteristic features is very long barbels, which can be up to three-quarters of the fish's total length. Sexual dimorphism in the species is weakly expressed, making external differentiation between males and females quite difficult.

Its natural habitat is in the equatorial part of South America, with the greatest distribution in modern-day Colombia. It prefers numerous small rivers with sandy or silty bottoms, and is also found in the main channels of large rivers such as the Vaupés, Querari, Isana, and others.

This is a rather peaceful and calm species, but it should not be forgotten that the Pictus Catfish is a carnivorous predator. Given the opportunity, it will readily eat small fish such as neon tetras, guppies, and others, so cohabitation is only possible with species of similar size. The Ornate Pimelodus feels comfortable both alone and in a group; intraspecific conflicts are not observed among them.

For comfortable keeping of a single fish, the minimum aquarium volume should be from 240 liters. For decor, it is recommended to use a sandy substrate, supplemented with several smooth boulders and various snags, which will serve as shelters for the catfish. Live plants are not mandatory, but clusters of floating vegetation will be very useful as they create additional shading in the aquarium. Pimelodus prefer subdued lighting and will spend more time in hiding under bright light. To recreate water conditions as close as possible to their natural habitat, in addition to maintaining the necessary hydrochemical stability of the water, a moderate horizontal current should be provided. The filtration system usually handles this task well, but in very large tanks, additional equipment may be required to create artificial current. Aquarium maintenance is standard: regular cleaning of the substrate from organic deposits and weekly water changes of 20–25% of the volume with fresh water. It is important to remember that contaminated substrate with stagnant water can lead to problems with the fish's barbels, increasing the risk of infection.

In the wild, the diet of the Ornate Pimelodus includes aquatic insects and their larvae, small worms, crustaceans, and small fish. Despite their predatory feeding habits, these fish are quite unpretentious in aquarium conditions and readily accept various types of food: dry, frozen, and live, provided they sink. It is important to note that the Ornate Pimelodus does not control its satiety and will continue to eat as long as there is food. To avoid overeating and associated digestive problems, it is recommended to feed the fish no more than once a day, offering an amount of food they can consume within 5 minutes.

Breeding this species of catfish in home aquariums is associated with significant difficulties and is almost impossible in an artificial aquarium environment.

The main cause of most diseases is unsuitable living conditions and poor-quality food. If you notice the first symptoms, you should immediately check the water parameters and ensure there are no high concentrations of dangerous substances (ammonia, nitrites, nitrates, etc.). The parameters must be brought back to normal, and only then can treatment measures begin. Detailed information on symptoms and treatment methods is provided in the "Aquarium Fish Diseases" section.

When purchasing, pay attention to the fish's activity and the condition of its skin. A healthy Ornate Pimelodus should be active, without visible damage, ulcers, or film on the body and fins. Pay special attention to the condition of the long barbels: they should be intact, without signs of splitting or necrosis, as damage to these organs often indicates poor water quality in the store.

• Avoid individuals with clamped fins or signs of emaciation
• Check for the absence of spots or white film, characteristic of fungal diseases
• Keep in mind that this species has sharp spines in its fins, so use thick bags for transport to avoid punctures

When inspecting in the store, it is important to remember that this is a predatory species. If the fish appear sluggish or are kept in severely crowded conditions, the risk of infectious diseases significantly increases. Sharp spines on the pectoral and dorsal fins pose a danger during capture, so it is best to use a special container or a thick net to move the fish, to avoid injuring the catfish and damaging the net.