Which fruit is in the picture?

Coccinia grandis, the ivy gourd, also known as scarlet gourd, tindora, and kowai fruit, is a tropical vine. It grows primarily in tropical climates and is commonly found in the southern Indian states, where it forms a part of the local cuisine. Coccinia grandis is cooked as a vegetable.

In Southeast Asia, it is grown for its edible young shoots and edible fruits.

Its native range extends from Africa to Asia, including India, the Philippines, Cambodia, China, Indonesia, Malaysia, Myanmar, Thailand, Vietnam, eastern Papua New Guinea, and the Northern Territories, Australia. Its documented introduced range includes the Federated States of Micronesia, Fiji, Guam, Saipan, Hawaii, the Marshall Islands, Samoa, Tonga, and Vanuatu.

Seeds or fragments of the vine can be relocated and lead to viable offspring. This can occur when humans transport organic debris or equipment containing C. grandis. Once the ivy gourd is established, it is presumably spread by birds, rats, and other mammals. In Hawaii, the fruit may be dispersed by pigs. Long-distance dispersal is most commonly carried out by humans due to its culinary uses or by mistake. Regarded as very invasive and on the Hawaii State Noxious Weed List, ivy gourd can grow up to four inches per day. It grows in dense blankets, shading other plants from sunlight and highjacking nutrients, effectively killing vegetation underneath. It was introduced to Hawaii as a backyard food crop.