Diversity identification of aquatic worms found in Thailand from 2 sources including pet shop in the central region and natural ditch at Sansai district, Chiang Mai province was conducted by external morphological features concluded that there are different aquatic worm species per region. Aquatic worms from central region had 4 Families 5 Genus such as 38.64% Tubifex sp. (Tubificidae), 30.85% Nais sp. (Naididae), 22.50% Aeolosoma sp. (Aeolosomatidae), 4.86% Branchiura sowerbyi (Tubificidae) and 3.10% Haplotaxis sp. (Haplotaxidae) respectively. Aquatic worms from Chiang Mai province had 3 Families 3 Genus such as 85.81% Aeolosoma sp. (Aeolosomatidae), 11.23% Branchiura sowerbyi (Tubificidae) and 2.96% Nais sp. (Naididae) respectively.
A study was conducted on a proper diet to feed aquatic worms (4 treatments, each treatments had 3 replications) using minced fish, decayed vegetable, yeasts and jellies for 4 weeks. It was concluded that aquatic worms fed with yeast had the best growth even through decline growth curve but no different fed with decayed vegetables (p>0.05). Aquatic worms fed with decayed vegetables and yeast had a higher growth rate than those fed with minced fish and jellied (p<0.05). Weight checking at aquatic worm 2 times (before and after demonstration), it was found that aquatic worm fed with yeast had the best growth and an increased growth curve but no different fed with decayed vegetables (p>0.05) and growth higher than jellied (p<0.05)
The study was conducted on the possibility of using aquatic worms to dispose of waste at the bottom of fish pond under aquaculture system with sustainable and environmentally friendly condition from culture catfish using 4 different quantities of aquatic worms (4 treatments 3 replications) for 12 weeks. It was concluded that compared with using only culture catfish (p<0.05) the additional use of aquatic worms to dispose of waste at the bottom of the pond because decreased organic matter in the soil and deceased ammonia in the water.