is it normal for just one or two guppys to like to hide out while everyone else swims around, my male guppy and ocasionaly his fav girl are always behind the log next to the heater, the tanks running around 78 degrees, and yesterday levels were A-0/NI-0/NA-20/PH-8.2 yea i know ive got hard water, cant do much about it. ive got to check the levels again tonight and he does come out to eat food and scrounge all food possiable off the gravel, and he also seems to get pissy if any one but his fav girl goes back to his spot.....is this normal for a guppy?? hes not gonna die or something on me? he looks fine just likes to hide.