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The aquatic equivalent to smelling in air is tasting in water. Many larger catfish have chemoreceptors across their entire bodies, which means they "taste" anything they touch and "smell" any chemicals in the water. "In catfish, gustation plays a primary role in the orientation and location of food". [14] Salmon have a strong sense of smell.
The variability in catfish sound signals differs due to a few factors: the mechanism by which the sound is produced, the function of the resulting sound, and physiological differences such as size, sex, and age. [61] To create a drumming sound, catfish use an indirect vibration mechanism using a swimbladder. In these fishes, sonic muscles ...
Synodontis make a sound that sounds like squeaking by rubbing their spines together. They do this when they have been frightened or when they become angry. [2] Synodontis may also squeak when they are taken out of the water. [1] These catfish are small- to medium-sized fish [4] with many species
The Raphael catfish will make some grunting/squeaking noises while out of water. Although generally sociable with other fish, sometimes this fish can feed on smaller fish so take care when introducing one to an established tank.
Featherfin squeakers are called such due to their ability to make noises to communicate with one another and also for their high feather-like fin which is valued by many hobbyists. Wild specimens can grow to a length of 30.0 centimetres (11.8 in) SL .
[10] This name is due to people hearing them make noise as if they were talking to each other. They can do this by moving their pectoral spines in a certain way called stridulation. [10] This process is not specific to catfish and is often displayed in insects, it is where animals will grind two bony or hard structures together to produce noise.
Catfish are found in a variety of habitats, from lakes or murky ponds to drainage ditches. They are scarce during the day, but come out at night to feed, searching the bottom of a lake or river for food. [13] They eat insects, leeches, snails, fish, clams, and many plants. They are also known to eat corn, which can be used as bait.
These fish are sometimes called "talking catfish" because of their ability to produce sound by moving their pectoral spine or vibrating their swim bladder. [7] Sizes range from 3.5 cm (1.4 in) SL in Physopyxis lyra to 120 cm (47 in) FL and 20 kg (44 lb) in Oxydoras niger. [6]