Table 2.

Number of chemicals for each trophic level from acute short-term and chronic toxicity tests available in the Japanese Ministry of Environment’s database after pruning of chemical structures and experimental values. The numbers of substances before pruning are given in parentheses.

	Acute Toxicity Test	Chronic Toxicity Test
Number of chemicals for Raphidocelis subcapitata	315 (372)	408 (577)
Number of chemicals for Daphnia magna	428 (509)	306 (372)
Number of chemicals for fish	331 (393)	35 (37)