Green, again?
Timothy ate a fish, and then another. He was supposed to, as most stingrays were carnivores, and loved to eat meat. However, he had approached this school of fish in a less than rithmic way, and this was inevitably problematic.
Fish weren’t the brightest creatures in the world, not by a stretch, but they were smart enough to understand some forms of rhythms. The social complexity of a mega-school of fish, naturally had some rules, and if someone broke those rules, a bunch of fish within the school were bound to notice!
The rules were simple. For example, huge fish who preferred solidarity, knew to swim slowly within such crowds, they were typically very relaxed as they knew better. Smaller fish were more frantic, but they knew enough not to separate from their groups or respective subgroups, and this was what kept most of them alive.