Wild Betta: Green Mahachai
Known only from a handful of localities in Bangkok, Samut Sakhon, Samut Songkhram and Samut Prakan provinces in central Thailand, all of which lie on the coast of the Gulf of Thailand.
Most habitats are in close proximity to Bangkok, which continues to expand rapidly, are considered under extreme threat, and recent surveys have failed to confirm that the fish is still present in Samut Songkhram and Samut Prakan.
Populations from different localities exhibit slight morphological differences, e.g., the shape of the caudal-fin can vary from rounded to ovate, and should not be mixed or hybridised in aquaria.
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