 P. fimbriata is found in the rain forests of India, Nepal, Sri Lanka, Hong Kong, Taiwan, New Guinea, the Solomon Islands, Malaysia including Malacca, Indonesia, and in Australia's Northern Territory and Queensland .: 424: 302: 99 – 100 It lives on foliage, tree trunks, boulders, and rock walls. Throughout its range, this is the most common species of the genus Portia. Queensland specimens of P. fimbriata live near running water and where there is moderate light, while Northern Territory specimens live in caves where the light varies from rather dark at the back to much brighter around the mouths. Other populations of Portia also live with higher light levels than in Queensland, and some members of these other populations are found in webs exposed to direct sunlight for part of the day .: 431 In Queensland, P. fimbriata shares its environment with a common prey, the very abundant Jacksonoides queenslandicus, and with large populations of other non-Portia salticids and non-salticid web-building spiders .: 432
