I bought 4 African Cichlids today. They were all swimming around happily and energetically at the store. The ride took about 30 minutes and I kept it cool in my truck. I left their fish bag in my tank for 30 minutes to acclimate and transfered them by net to my tank. Immediately 3 of the dropped right to the bottom, barely moving and breathing hard. They will only swim around in a quick short burst, then back down sometimes laying on their sides. They have been like this for the past six and a half hours now. Ive had my water tested and the ammonia is just a tad high but nothing bad. I dont know what to do, except wait for them to die and take them back to the pet store for an exchange, which I would hate to do cause I already got the prettiest ones they had. Please help. Thanks.