I am trying to swap over my default aquatic pet, but as I only have two I don't seem to be able to. Currently my primary aquatic pet is a Jungle Stalker and my secondary pet is an Armour Fish:
This means that whenever I go into the water, for the first time after logging in, the pet that I have out will swap from my Spider (primary land pet) to the Jungle Stalker (primary aquatic pet). I know that I can swap these over using the 'swap pet' facility (F4) but how do I permanently swap these over so I don't have to do this?
When I click on the up arrow, both of the pets I have available are coloured in;
However, selecting the Armour Fish in the primary slot causes no action, the selection screen simply closes. This works fine on my land pets because I have three pets, so can select the other pet and then select the pet I want in the other slot, but as I only have two aquatic pets this isn't an option.
How do I swap my primary pet when I only have two?