Equip accessories, armour and weapons and even companions to increase your CP. 

This can be done from the Bag UI Screen - access it via the bag button from the main game.

Tap on an item to upgrade/downgrade and equip/unequip it.

All equipment has different rarities - the higher the rarity, the more powerful it is, thus - having a higher CP

• Common (grey)
• Uncommon (green)
• Rare (blue)
• Epic (purple)
• Legendary (orange)

Upgrade each equipment  piece with a specific amount of runes and coin to level it up and increase its CP even further

You will need fish and coin in order to upgrade companions - or purchase their special in-game skins to push them to the maximum level instantly!

A green arrow next to an equipment means you have enough resources to upgrade it