I think the kribs might just be the explanation, and if they have been in the brooding mood they will dominate as much of the tank as they feel is necessary, and they have the speed to whack out angles, gouramis and corys, or intimidate them enough to stress them out of the will to live. Tetras and harlequins, on the main will split shoal, or have the speed to get out the way. >I had thought was a goner a week or so ago, but he >has since regrown his fins The one parameter I've not noticed is kribs not going for fins (except for tails in dominance posturing), they tend to want to strike mid body if they can but an angel might be too good an opportunity to miss. You might split you tank into two with a piece of acrylic sheet with the kribs one side and the others on the other side. If you do do this then exchange some water from each side of the sheet daily just to make sure all the water is getting exchanged through the filter. Scot (one t;-)) ________________________________________________________________________________ This message has been checked for all known viruses by the Star Screening System http: //academy.star.co.uk/public/virustats.htm ------------------------------------------------------------------------- This is the apistogramma mailing list, apisto@listbox.com. For instructions on how to subscribe or unsubscribe or get help, email apisto-request@listbox.com. Search http://altavista.digital.com for "Apistogramma Mailing List Archives"!