Final Assignment: Channa striata (Snakehead)
Channa striata or Snakehead is a common fish in the freshwater. They usually live in a pond, rivers, lakes, or flooded fields. They usually returning themselves to the permanent water bodies in the dy season, where it survives by burrowing in the mud.
They have specific habitat that ideal for them. They prefer to live in 0.2 - 2 meters depth range, water with 22ºC - 28ºC temperature, 0.462 µmol/L nitrate, and also 34 PPS salinity. They live in 7 - 8 pH range, and because they are obligate airbreather, they prefer oxygen with 0.380 ml/L amount.
This fish usually sexually mature when they reach 30 cm body length (it needs about 2 years), but some reports show that they are able to breed event before they reach 2 years.
They prey on frogs, water bugs, smaller fish, and also attack anything that move when they are in breeding time.
The fry are reddish orange and are guarded by both parents until turn greenish brown around 5 - 6 cm. Sometimes parents become cannibals when the fry already hatched from their eggs.
This is the fish that I caught in my final assignment area, Citarum river. It has 13.9 cm length
Based on some informations, this fish is common to be found in Southern China, Pakistan, Most of India, Southern Nepal, Bangladesh, Sri Lanka, South-east Asia, Indonesia, and also Philippine.
This is one of the fish that I found in my final assignment area. Based on older reports that I read from UNPAD (University of Padjajaran), this kind of fish are still able to live in Citarum river, although from the location where I caught it, I didn't find it in the main river body. I found it in small pond that located near from the river. The pond is surrounded by paddy fields. The pond has muddy substrate, covered with stones and also circled by root and bushes. In Indonesia we call this fish, "gabus".