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The pygmy corydoras is a silver-colored fish, with an unbroken black line that runs horizontally along the center of the sides of the fish from the tip of its snout to its caudal peduncle. [5] It has a second thin black line along the lower part of the side of the body, from behind the ventral fins and continuing into the tail. [ 5 ]
The fish inhabits sluggish waters with dense vegetation along the banks. [1] It occurs in shallow muddy waters and will grow in length up to 7.5 centimetres (3.0 inches). [ 1 ] It lives in a tropical climate in water with a 5.8–8.0 pH , a water hardness of 2–30 dGH , and a temperature range of 22–28 °C (72–82 °F). [ 1 ]
A white variation with black patterns is commonly seen in the aquarium fish trade. However, this color variation also is prohibited where walking catfish are banned. Very well-rooted plants and large structures that provide some shade should be included in an aquarium with these fish. Any small tankmates will be eaten by this fish.
Hypostomus plecostomus, also known as the suckermouth catfish or common pleco, is a tropical freshwater fish belonging to the armored catfish family (Loricariidae), named for the longitudinal rows of armor-like scutes that cover the upper parts of the head and body (the lower surface of head and abdomen is naked soft skin).
Many aquarists are fascinated by the habits of these fish. They ceaselessly comb the bottom of the aquarium for food and therefore disturb it slightly, sending up detritus and waste material that has settled loosely on the bottom. They prefer being kept in groups of 5 or more, being sociable fish and are ideal fish for a community tank. [2]
The family derives its name from the Greek words kalli-(καλλι-, 'beautiful') and ichthys (ἰχθύς, 'fish'). [2] Callichthyidae is one of six families in the superfamily Loricarioidea, and is sister to a clade formed by Scoloplacidae, Astroblepidae, and Loricariidae. [3]
Corydoras julii is a relatively small species of fish, growing to be no more than 52 millimeters in length. [5] Its skin is a translucent whitish-gray, with fine black spotting across the body and a horizontal stripe which reaches up the mid-body until it is equal with the front base of the dorsal fin.
These fish burrow in the soft river bottoms and frequently occurs on sandy bottoms. [4] These fish feed on mollusks, crustaceans and organic debris. [4] They have rigid pectoral fin spines. The striped Raphael catfish also has tiny and curved protective spines running along its body.