Spotted on bank of cattle pond and then scurried into the water. No fencing or containment.

Note: To clarify, all signs indicate this is either a

1. Uncontained pet on private property
2. Deliberately abandoned pet
3. Escaped pet that has managed to travel to this location (if this option, not likely to have travelled far due to rural setting with few homes spaced 1/4mile to 1 mile+ apart and scarce water sources)

So, this is a polyergus bilateral gynandromorph! ½ worker caste (red), ½ alate (black). The mandibles, eyes, single wing, and antennae are the more obvious caste traits reflected in each half of this individual. Found them shortly after leaving the colony possibly (I found one a few feet away).
See: https://www.inaturalist.org/observations/124878696
& https://www.inaturalist.org/observations/124879042

(EN) Papuan Toby - (FR) Canthigaster papou
Canthigaster papua, Panglao, Philippines

C. papua differs from C. solandri by having a snout clearly more orange than the rest of the body, stripes on the back, an ocellus at the base of the dorsal fin even once adult (juveniles of C. solandri can have one) and spots on the caudal fin

I was thinking Carolina Fanwort but I'm not sure...Coontail and Common water-crowfoot look similar but based on the one flower picture I think this might be something else altogether. If you're able to ID this plant can you please check https://www.inaturalist.org/observations/7311118 as well? :-)