Seed predator fish - Snake
Snake (snake) is a not-legged reptile animals and long bodied. Snakes have scales like a lizard and both were classified into the scaly reptiles (squamata). The difference, in general-legged lizards, have ears, and eyelids that can open the lid. Snake is one of the most successful reptiles evolved in the world. There are lots of families, genera and species of snakes that live in the world today. Systematics are as follows:
Order (nation): Squamata.
Suborder: Serpentes, Linn, 1758.
Snakes swallow their prey to eat; means, without the chewed into pieces smaller. Teeth in the mouth of the snake is not working for chewing, but to hold their prey in order not easily separated. In order to smoothly swallowed, the snake usually choose to swallow their prey head first.
To warm the body and help smooth digestion, snakes often bask in the sun. Snakes reproduce by laying eggs. The number of eggs could be a few, tens or even hundreds of eggs. Snakes have no ears and eardrums, and has no sense of privilege on the sharpness of the eye. His eyes are always open and covered with a thin membrane that is easy to see the movement around him, unfortunately he could not focus her eyes. Snakes can only see clearly at close range. Senses that a snake is the mainstay of scales on his belly, which can capture the vibration of a human or other animal step. There is a hole between the eyes and mouth. snakes can serve as thermosensorik (heat sensor) this organ is usually called a niche or organs "Jacobson". Snakes can also determine the change of temperature due to the arrival of other creatures.
There are many types of snakes, but really a threat to fish is a snake that live in aquatic or semi-aquatic (water snake) in ponds, rice fields, rivers, swamps and lakes. This aquatic snakes prey on fish, frogs, tadpoles, and fish eggs. According to (Sachlan, 1975) fish prey on the greedy snake is a snake or a snake sacking Genis Striped (Homalopsis buccata). Snakes of this kind that loved to eat fish and fish seed is still sized adult.
In addition, there are also other types of water snakes found in the pond that is the rainbow water snake (Enhydris enhydris). Rainbow water snakes are often found in the channels of water, fish ponds, wetland environments, marshes and small rivers that have current calm. Rainbow serpent is very fond of prey on small fish, and often become pests in the maintenance of fish ponds. Other prey are frogs, toads, including children, and also predicted a lizard.
Bodied rainbow water snakes are relatively moderate, the maximum length of 80 cm, although most between 50-60 cm. Small-headed, paunchy, and short tail. Back (dorsal), generally light brown to olive-gray-black, with a pair of lighter colored line next to the backbone line. Body side (lateral) side down, bright yellowish or whitish, bordered blackish zigzag lines along the boundary with the ventral scales (stomach).
Sometimes it looks a little pink line faintly in the light of this, a similar pattern of elongated lace. The underside of the body (ventral), yellowish or whitish, sometimes with spots or faint line along the middle line.
At the time of morning and afternoon, a rainbow water snakes are often seen out head and partial body of water, and silence resembling kindling. There are times when some snakes appear together in the distance that is not how far.
Snakes can be controlled by way of direct capture these snakes. On the island of Java and Lampung, the hunting of wetland snakes and snake swimming a lot done at night, the snakes are taken skin and then sold. The trick with "ngobor" using a lamp pumped or center, and a snake that looks directly captured using hand. These snakes are not venomous or poisonous weak (mildly venomous), so its bite is not deadly. In some places in the interior of Central Java, the children often catch this snake snared by a stick through the head leaves. Alternatively, given the seed pool fence that snakes can not get into the pool area.
Source: Khairul Amri and ToguanSihombing, PT. Gramedia Pustaka Utama, 2008