| Subject | English | Bulgarian |
| fish.farm. | Arctic cod | полярна треска (Boreogadus saida) |
| life.sc., fish.farm. | Atlantic cod | треска (Gadus morhua, Gadus callarias, Gadus morrhua) |
| life.sc., fish.farm. | Atlantic cod | атлантическа треска (Gadus morhua, Gadus callarias, Gadus morrhua) |
| ichtyol. | cod-fish | треска |
| ichtyol. | cod fishes | трескови |
| life.sc., environ., fish.farm. | cods and haddocks | Трескови (Gadidae) |
| fish.farm. | polar cod | полярна треска (Boreogadus saida) |
| life.sc., environ., fish.farm. | true cods | Трескови (Gadidae) |