Mandatory Nursing Competencies & Information Packets. Please review the following Self Learning Packets and complete the corresponding post-tests. Make sure to click below the final question in the test so it is graded correctly at the bottom of the screen. Many of the tests are short but require a grade of 100% to qualify as passing.
Stingray Giant Freshwater. Stingray, Giant Freshwater (Himantura Chaophraya) The Giant Freshwater Stingray in Thailand is believed to be the largest freshwater fish on the planet reaching weights approaching 1000 lbs.
The stingrays are a large suborder of the rays. They are cartilaginous fishes related to sharks. They are classified in the suborder Myliobatoidei of the order Myliobatiformes, and consist of eight families. Most stingrays have one or more barbed stings on the tail, which is used only for self-defense. The sting may reach about 35 cm, and its underside has two grooves with venom glands.