The Spanish word 'pescadería' (fish shop) has its roots in the Latin word 'piscis' meaning 'fish'. This evolved into the Latin verb 'piscari' (to fish), which became 'pescar' in Spanish. From 'pescar' came 'pescado', which specifically refers to caught fish or fish as food in Spanish.

The word was then combined with two Spanish suffixes: first '-ero' (indicating occupation or place) was added to form 'pescadero' (fishmonger), and then '-ía' (indicating a place or establishment) was added to create 'pescadería', literally meaning 'the place where a fishmonger works' or simply 'fish shop'.

Several common Spanish words share the same root as 'pescadería'. The verb 'pescar' means 'to fish' and is one of the first verbs Spanish students learn related to food and activities. 'Pescado' is the common word for fish as food (as opposed to 'pez' which refers to a living fish). 'Pescador' means 'fisherman', and 'pescadero' means 'fishmonger'.

While English 'fish' is not related to 'pescadería', there are some English words that share the Latin root 'piscis'. These include 'piscine' (relating to fish), 'piscivorous' (fish-eating), and 'pisces' (the astrological sign of the fish). The scientific term 'pisciculture' (fish farming) also comes from this root.