Sweetfish

Sweetfish has the tiniest weight range of this stretch of the list and a price that is easy to misread. It is a Common, golden-hued fish that the wiki says is known for its delicate sweet flavor and is found in a short, river-like gap on Sunstone Island. Cast Worm in clear autumn weather, at any time of day.

It weighs just 0.4 kg on average (0.2 to 0.6 kg), yet the rate of C$80 per kg gives about C$34. That ranks 685 of the 742 documented fish for average value, and 641 of 663 for maximum weight, so it is among the lightest catches recorded. Base XP is 25. The high per-kg rate is deceiving: with so little weight to multiply, the total stays small.

The data lists no other fish of the same rarity in the same zone, and no rods sold there, so there is little to pair with it. It stands alone as a simple entry with no special requirements beyond autumn and clear skies.

Verdict: pick it up if it bites, and do not plan a route around it. A Sweetfish is a good example of how a flashy per-kilo number can hide a tiny payout.