Introducing Pomacea! (also, small Bagrada update)

This is my Pomacea diffusa specimen! The store labeled it as "bridgesii", which is known to be an incorrect ID. I've run it through a key and it has the characteristic 90-degree-ish shell suture.

I involuntarily acquired the watersnail last month after an unfortunate series of events involving an irresponsible buyer and subsequent month-long fasting session for it. So far, its physical health appears to have improved since I began rehabilitation efforts; a crackly pale growth ring (presumably from the fasting period) I saw on it has been followed by some more normal-looking deposits of shell. However, it appears to have become somewhat dormant in the current cold weather; it refuses to ingest whole vegetables and will sporadically eat somewhat large quantities of algal wafer (which contain few algae and lots of green food coloring + starch). This also makes it quite a boring specimen, as it spends all its time sleeping, feeding, or travelling aimlessly. I doubt it will become less boring during the spring though, except for sleeping less and eating more.

I am rather concerned for its future safety and psychological health, though. While outdoor air temperatures here never get cold enough to kill all the cold-intolerant bugs, they are cold enough to induce in me constant sneezing (and are also below the reported thermal tolerances of diffusa). The situation indoors is of course somewhat better, but in the past it has nearly approached below 65 deg Fahrenheit (the danger zone). My deceased flightless Cotinis mutabilis male (rest in peace) was not harmed by them, but water is usually colder than the surrounding air. I am also stuck with a relatively small jar for housing it, since my juvenile koi specimens would likely harass or outcompete it to death if I threw it in their tank; this means there are no dark hiding areas for it. I am not sure if Pomacea absolutely require hiding areas to prevent stress, like carabids/tenebrionids, but it often drops to the bottom of its jar (a defensive maneuver) if I turn on excessively bright lights at night.

The Bagrada hilaris female (which is just as boring despite its large appetite) just lost a tarsus, by the way. I suspect I may have pinned its leg under the lid, but my memories only recall having said leg near said lid. In any case I have provided it with a dead leaf to sit on, since it is no longer capable of walking up plastic walls and cannot reach vertical sleeping areas, which it prefers.