|Release date||21 November 2006 (Update)|
|Experience||24 / 300 (and 50 Agility)|
|Location||Piscatoris Fishing Colony|
|Loot||Ruby harvest (item)|
|Examine||It's a ruby harvest butterfly.|
Players can find ruby harvests at the Piscatoris Hunter area just south of the Piscatoris Fishing Colony (fairy ring code AKQ). They must wield a butterfly net and have at least one butterfly jar in their inventory to catch them (To wield the net in your hand, right-click on the action bar's minimise icon and toggle the 'Sheathe/Unsheathe Weapon' option. One jar is needed for each butterfly you wish to keep). All of these items are available for purchase in Hunter stores, an example being the shop in Yanille.
With level 80 Hunter and 75 Agility, the player can catch ruby harvests with their bare hands. It may take several attempts to catch one, and the player will follow the butterfly with a jumping animation until it is caught. Doing this gives 300 Hunter experience and 50 Agility experience. The enhanced yaktwee stick can be used here, if sheathed. Following an update on the 10 September 2013 catching a butterfly bare-handed gives a chance of obtaining a Crystal triskelion fragment. After the butterfly has been caught the player will release it, meaning that the butterfly cannot be kept. After catching a ruby harvest, players can use it on another player to increase the other player's Attack level.
- There was a glitch which made the butterfly white instead of red, however this was fixed on 20 October 2014.