19 Most Popular Types of Catfish: Species, Habitat & Pictures

Panda Corydoras are among the tiniest catfish available and earn their name from distinctive black markings on pale backgrounds, resembling panda coloring. They're scavengers that actively forage along the substrate, consuming uneaten food before it decays and degrades water quality. However, all corydoras should still receive their own dedicated meals-don't rely entirely on them to clean up scraps. Support their health with partial water changes every three weeks and effective filtration to maintain proper oxygenation.

Peppered Corydoras are one of the most widely kept catfish species and among the hardiest. They display black spots on their flanks that sometimes merge into banded patterns, with iridescence visible in good lighting. They were among the first tropical fish bred successfully in Europe, spawned in Paris as far back as 1878, and remain eager spawners in home aquariums. Their willingness to breed and hardy nature make them excellent for beginners.

Green Corydoras lack the dark spots of their peppered cousins, instead showing strong iridescence on the face and upper back that ranges from green to copper depending on light conditions. Females tend to be larger and more rotund and actively initiate spawning. Eggs are laid in small batches among aquatic vegetation and hatch within about five days; fry will initially need small live foods.

All corydoras prefer fine substrate where they can sift comfortably and should be kept in small groups. They require stable, well-filtered water.

Pictus Catfish

Pictus Catfish are attractively patterned with prominent black spots against a silvery body. Their docile temperament makes them suitable for community tanks-they can be kept in shoals or mixed with other nonaggressive fish that share similar water conditions. While nocturnal, they may feed during the day under subdued lighting. One practical tip: their sharp pectoral fins can become stuck in aquarium netting, so handle nets carefully or use a soft container to transport them.

Glass Catfish

Glass Catfish are remarkable for their nearly transparent bodies that allow them to blend with their surroundings-their only visible color is a small reddish-violet patch behind the gills. Long barbels and a lengthy anal fin contrast sharply with a barely visible dorsal fin and rudimentary pelvic fins. These fish are highly active and naturally inhabit fast-flowing streams, so replicate that environment with strong current, excellent filtration, and open swimming space in your tank.

Panda Corydoras Care Profile

• Size: 1-1.5 inches
• Water temperature: 72-82°F
• Tank setup: Fine substrate, minimal flow

• Temperament: Peaceful, scavenging
• Minimum group: 3-5 (they are social)

Medium-Sized Catfish with Specialized Habitat Needs

Banjo Catfish

Banjo Catfish are named for their distinctive body shape and rarely venture far from the substrate. They instinctively burrow in gravel, mimicking their natural riverbed behavior. To help them feel secure, include soaked, shriveled oak leaves to provide extra camouflage and a substrate they can burrow into. Pairs can breed in aquariums-females lay up to 5,000 eggs in a pit and males guard them until they hatch.

Porthole Catfish

Porthole Catfish are patterned with dark speckling that varies among individuals but never extends to the fins. They hold their longer pair of barbels horizontally while swimming and point the shorter pair downward. Sexing is difficult, but pairs will breed in captivity. Trigger spawning by lowering water level and raising temperature to around 82°F (28°C). Males create bubble nests for the eggs.

Whiptail Catfish

Whiptail Catfish have slender, brownish bodies that resemble twigs, and mature males develop distinctive bristles on their snouts. A day before spawning, females develop a visible egg-laying tube called an ovipositor. They lay up to 60 adhesive eggs on rocks, which are typically guarded by males until fry emerge. These fish are peaceful and suitable for community setups if they have adequate space.

Indian Catfish

Indian Catfish are Asian hillstream species that require well-filtered, well-aerated water mimicking fast-flowing streams. They feed naturally on insects at the water's surface, so avoid sinking pellets-offer live foods, freeze-dried items, or quality flake foods instead. They're lively and social, thriving in small groups. Their water must be oxygenated and current-driven to replicate natural conditions.

Bumblebee Catfish

Bumblebee Catfish have orange and brownish-black bands resembling a bumblebee's stripes. They're often confused with two similar species sharing the same common name-Leiocassis siamensis (Asia) and Microglanis poecilus (South America)-so identify carefully before purchasing. Nocturnal by nature, they can be kept safely with other nonaggressive fish of similar size, but will prey on smaller fish and fry of livebearing species. These are not suitable for peaceful nano tanks.

Bottom Dwellers & Plecos

Pleco Species (Zebra, Peppermint, Gold Spotted)

Zebra Pleco stand out with straight black bands across their bodies, distinguishing them from the wavy-lined L098 variant. Males develop wider heads than females when viewed from above, and their pectoral fin's first ray is broader. Include sand, rocks, and bogwood to recreate their natural habitat. Water must be well-filtered and well-oxygenated to encourage spawning in caves; eggs hatch in about a week.

Peppermint Pleco (L030/L031) are identified by black backgrounds decorated with white spots. Interestingly, L030 now appears to be merely the juvenile form of L031, which displays a finer spotted pattern. Juveniles are caught more often, making L030 seem more common. These plecos require well-oxygenated water with low nitrate readings.

Gold Spotted Pleco display burnished gold coloring on their fins with contrasting yellow body spots-coloration is brightest in juveniles and fades with age. Males have a broader first pectoral fin ray and slightly bristly heads. While no confirmed breeding records exist yet (these were only officially described in 1994), they're not difficult to keep despite their large size. Feed them catfish pellets and live foods near the substrate. They become more aggressive as they grow, so provide plenty of retreats and ensure uneaten food doesn't accumulate in them, as this will harm water quality.

Specialized & Unique Species

Spotted Catfish

Spotted Catfish require spacious accommodation from the start due to their size. They have large, bill-like mouths with prominent barbels and elongated bodies, displaying variable blotched patterns of dark spots. These fish naturally prefer cooler, deeper waters and rest on beds of pebbles during the day, becoming active at dusk. Tank setup should include caves, plants, or structures where they can rest and hide.

Emerald Catfish

Emerald Catfish are prized for their green iridescence covering the head and much of the body, with pinkish underparts most evident in males. For breeding, keep a small group of three males and two females together. Eggs are scattered among aquatic vegetation, so remove adults before they consume eggs. These fish are relatively peaceful and blend well in planted community tanks.

Giraffe Catfish

Giraffe Catfish are named for their distinctive soft, mottled brown-and-white patterning resembling a giraffe's coat, with several dark dots on both sides. They're diurnal (active during the day) and forage the substrate for edible items. They require fine floor covering, bogwood for retreats, and plenty of space for their adult size. Successful captive breeding is extremely unlikely, so treat them as non-breeding display fish.

Black Fin Shark Catfish

Black Fin Shark Catfish have streamlined bodies with large dorsal fins, plus white-edged underside fins. Although primarily freshwater, they occasionally enter brackish waters in river estuaries, so adding a small quantity of sea salt (about one teaspoon per gallon/4.5 liters) to the water is recommended, especially initially. As they age, their characteristic coloring fades, but their need for open swimming space and strong filter current remains essential. They are mouth-brooders, with males carrying eggs in their mouths until fry are free-swimming.

Butterfly Catfish

Butterfly Catfish are small and not always available, but they're social and can be kept in groups-a notable advantage over solitary large plecos. They're attractively marked in various brown shades with cream-colored areas. The main drawback: they're nocturnal and shy, so provide suitable retreats and feed at dusk. An aquarium for Butterfly Catfish should prioritize hiding spots over open water.

Large & Predatory Catfish

Red Tailed Catfish

Red Tailed Catfish are intelligent, fast-growing fish that can reach very large sizes-it's easy to underestimate this when viewing juveniles. Their appeal lies partly in their intelligence: they recognize their owners and will feed from your hand. After feeding, they rest on the bottom to digest. These fish demand efficient filtration, regular partial water changes, and substantial tank volume as they mature. Only experienced aquarists with appropriate space should consider them.

General Care Guidelines for All Catfish

Regardless of species, all catfish benefit from stable water conditions, appropriate filtration, and hiding spaces. Many are nocturnal, so subdued lighting helps them feel secure. Check each species' specific temperature and water chemistry needs before purchasing-what works for one species may stress another.

Feeding varies: some are scavengers (corydoras, plecos), others need live or meaty foods (predatory species), and some prefer insect-based diets (hillstream species). Overfeeding is a common mistake that degrades water quality fast, especially in tanks with bottom-dwelling species.

Finally, remember that identification can be challenging-many species show individual variation in pattern and coloration, and new species are constantly being discovered. When purchasing, ask your retailer for specific identification and care requirements rather than relying on common names alone, which often apply to multiple similar species.