- "Acklay are native to the planet Vendaxa, whose ultra-dense ecosystem lends itself to evolutionary specialization. There, acklay are among the top predators, able to stalk and eviscerate prey among the jungles and plains, tracking creatures by their electrical auras. An acklay is not built to build nests or forage or migrate when seasons change–an acklay only knows how to hunt, and survive the hunting. Despite various governments’ efforts to prevent the spread of acklay, the creatures are traded on the black market as gladiatorial challenges and targets for big game hunters. Inevitably, a few acklay escape or are left out in the wild, and the creatures either die–or they breed, survive and threaten anyone they encounter."
- ―In-game Codex (Bestiary)
The Acklay is a large, non-sentient creature native to the oceans of Vendaxa. Its physical appearance makes it a natural predator, with six sharp claws and an aggressive attitude. As such, it is commonly found in gladiatorial arenas on different worlds in the Outer Rim Territories, such as Geonosis.
Although Acklays live underwater, they can go on land to hunt, which they frequently do, as the Lemnai, a creature that lives on the plains of Vendaxa, are their main source of food. As they reside in the oceans of Vendaxa, their eyes enable them to see in darkness, although they are near-sighted. Despite their crustacean-like nature, Acklays also have characteristics possessed by reptiles, such as their powerful jaws filled with sharp teeth. The Acklay have a tough, leathery green skin, another trait from its reptilian heritage. The Acklay's abdomen is more vulnerable than other parts of its body, as the flesh covering it is not as tough as it is elsewhere. Acklays have a bony crest around their neck, used for both intimidation and protection. Some Acklay can use the Force, but this is very rare.