That's quite an assortment of critters!
With all of those different fish, I think you're much better off leaving the pH where it is. Some of them like more acidic water, and some like more alkaline, so leaving it near neutral is a good compromise.
From those pictures, fish I saw that you hadn't explicitly listed were a powder blue dwarf gourami (this could be your blue fish) and some sort of dark colored catfish (is this the one that looks like a jet?). It was sort of difficult to see that fish in the pictures so properly identifying it is tough. It could be some sort of whiptail cat, possibly.
Just as a word of warning: that clam is likely going to die, since they are filter feeders and really need a steady diet of green water in order to live. Some members here have suggested trying to spot-feed clams with liquid fry foods.
Gump, one of our more experienced fishkeepers, had this to say:
Quote:
|
...Clams are filter feeders so if you don't have a lot of micros in the tank they wont last long. It's hard to tell when a clam dies and if you leave a dead clam in the tank for over a few days it will muck up your water quickly.
|
One more thing: I definitely wouldn't recommend adding a turtle to that tank. It's already quite heavily stocked as it is, and aquatic turtles add a ton of waste to your system. They also require a basking area above water as well as special UV lighting to keep them healthy. The most commonly available aquatic turtle, the red eared slider, gets to be about a foot across and needs a 75 gallon tank. The smaller musk turtle could be kept in a 55, but not with those other fish. Last, but not least, any aquatic turtle will eat live fish so the fish you've got in the tank now wouldn't last very long.
Similar Threads 
