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Introducing a Catfish Fancier’s Dream: the Frog Mouth or Angler Catfish, Chaca bankanensis – Part 1

Hello, Frank Indiviglio here.

Those who believe that one must look to the sea for really bizarre aquatic life forms have no doubt missed the frog mouthed catfish. If ever a freshwater fish were to qualify as a true oddity, something along the lines of a marine anglerfish, it is certainly this Southeast Asian native. In its appearance, movements (“walking” rather than swimming) and ability to vocalize (the sound it makes, “chaca-chaca” has given rise to the Genus’ name), this unusual creature seems to straddle the line between fish and amphibian.

Catfish Heaven
I first came upon the frog mouth catfish in a book translated from Japanese. As I learned upon visiting Japan, catfishes of all types are incredibly popular there – one store I frequented had over 50 tanks of various species! The fact that Prince Akishino (son of Emperor Akihito) studies catfishes has increased public awareness and appreciation of these often over-looked creatures.

Fortunately, I had a number of contacts in Japanese pet stores and public aquariums…this was paradise for me, and I was able to learn a great deal about catfishes that I had not encountered before, including the frog mouth.

Description and Range
The frog mouth catfish is a squat, mainly brownish fish, possessing a huge mouth that gives a square shape to the head. The tiny eyes are nearly invisible, and from the wide head the body tapers sharply. Cutaneous flaps of skin help to break up the body’s outline and add to the camouflage effect as the fish lies on the river bottom waiting for prey.

Native to southern Thailand, Malaysia, Sumatra and Borneo, the frog mouth catfish is not common in the US pet trade but is becoming increasingly available. Best kept by those with some aquarium experience, it is well worth searching for.

A Shy and Sedentary Captive
Although not an active fish, the frog mouth does require quite a bit of room, as it reaches nearly 1 foot in length and is stressed by close confinement. A 30 Long Aquarium is the minimum that I would recommend for a single animal, with a 55 Gallon Aquarium sufficing for a pair or possibly a trio. It spends most of its time hunkered down on the bottom of the aquarium, preferably under cover of some sort, and even at night does not actively hunt for food.

The frog mouth catfish is best kept alone, as it can swallow prey nearly half its own length. Also, it is very prone to stress and does not do well in aquariums housing actively swimming fish.

Click here: Introducing a Cafish Fancier’s Dream: the Frog Mouth or Angler Catfish, chaca bankanensis – Part 2, to read the rest of this article.