Urticina piscivora, common names fish-eating anemone and fish-eating urticina, is a northeast Pacific species of sea anemone in the family Actiniidae. Description Urticina piscivora is a large anemone, growing to a maximum height of around and in diameter. The column is bright red in colour. The acontia is absent, but it has tubercles. These are not white and are arranged in circumferential rows. Normally they do not accumulate debris such as shells and sand. This anemone is made up of three layers of cells called the epidermis, the mesoglea and the gastrodermis. The epidermis forms the outermost layer, while the mesoglea is situated between the other two layers. The innermost layer, the gastrodermis also referred to as the gastrovascular cavity functions as the gut of the anemone. The gut of the fish-eating anemone is divided into compartments by sheets of tissue called “septa”. These sheets of tissue develop into tentacles on the surface of the anemone. The tentacles of many species of anemones are found in multiples of six. Unlike other anemone the fish-eating anemone does not possess an acontia, which is thread-like tissue made up of stinging cells that function as a defense mechanism to protect against predators. However this particular anemone does possess tubercles. This species may be confused with Urticina crassicornis. Although they may both have a red column, the tentacles of U. crassicornis normally have transverse bands, and olive green blotches are commonly found on the column. Distribution This species occurs from Alaska in the north, down to La Jolla, California in the south. Habitat Even though it can be found in intertidal zones as well it most commonly inhabits exposed, rocky Subtidal areas of outer coastlines. It attaches itself to rocky prominences in locations with a substantial current flowing past. Reproduction Many species of anemone are monoecious, meaning that each individual organism contains both the male and female reproductive organs of the species. The fish eating anemone on the other hand is dioecious, meaning that it has distinct male and female individual organisms. They reproduce sexually through the external fertilization of egg and sperm. The produced larvae will float in the current until it eventually lands. Afterwards the larvae will attach itself to the bottom develop a pedal disk which will grow to form an anemone. Diet and behavior As its name suggests, this species is capable of capturing and consuming small fishes and shrimp.