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| trota iridea (Oncorhynchus mykiss, Salmo gairdneri, Salmo irideus); Oncorhynchus mykiss (Oncorhynchus mykiss, Salmo gairdneri, Salmo irideus); trota americana (Oncorhynchus mykiss, Salmo gairdneri, Salmo irideus); trota arcobaleno (Oncorhynchus mykiss, Salmo gairdneri, Salmo irideus) | |||
| steelhead: 4 phrases in 1 subject |
| Fish farming pisciculture | 4 |