The relationship between the speakers is probably

Kelas: SMP
Pelajaran: English
Kategori: compliment
Pembahasan:

The relationship between the two speakers is probably a child and someone he admires in fishing, the interest they both like, or just nothing in particular, but between strangers. The child said the compliment to him as he saw the number of fishes he caught. So, actually they have no peculiar relationship.