A betta helper needs the solitude rule before anything else
The first emergency detail about a betta is that he lives alone and must stay alone. A neighbour who helpfully adds a companion fish, moves him into a community tank, or puts a mirror against the glass for company can cause a fight, torn fins or dangerous stress. Helpers also need to know his name, his normal colours and fin shape, and where he usually rests, because a betta draped over a plant leaf or lying on his side on a rest leaf near the surface is often simply asleep, not collapsed.
Feeding details, written in betta-sized amounts
Feeding is the detail helpers most often get wrong with a betta, because his stomach is tiny and kindness looks like a generous pinch. Leave the exact food pot, the number of pellets per feed, and the feeding times, and state plainly that uneaten pellets should be lifted out rather than followed by more food later. Note any fasting day you normally keep, any treats he should not receive, and that no human food, bread or other fish's flakes should go in. If he refuses food for more than a couple of days, hides constantly, or his fins clamp tight, the helper should message you rather than experiment with different foods.
Warm water, gentle flow and what not to change
A betta helper needs the tank's target warm temperature, where the thermometer sits, and the instruction to leave the heater and filter switched on at all times. Bettas come from warm, slow water, so a cold room, an unplugged heater or a filter suddenly turned up to full flow all matter to this fish in particular. For top-ups, helpers should use only the named water conditioner, add water slowly at a similar temperature, and never do a full water change, empty the tank for cleaning, or wash the filter media under the tap, since that destroys the bacteria keeping his water safe.
Moving a betta, if the house itself becomes unsafe
If the betta truly has to leave, helpers need the lidded-cup method in writing: scoop him gently using a clean cup dipped into the tank, never a net chased around plants, which tears long fins. He travels in his own tank water, in the dark, kept warm and level, and he is never tipped into a bowl, a vase or another fish's tank at the destination. Note where the cup, bags and conditioner are stored so nobody improvises with a scented jug or a container that once held soap. A spare tank at a fish-keeping friend's home is the destination to name, not whichever house is nearest.
Contacts, equipment failures and the decision line
The emergency sheet for a betta should name you, a second family contact, the aquatic shop you use, and a veterinarian who sees fish if you have one, in the order helpers should try them. Add what to do for the failures this setup can actually have: a battery air pump location if power fails, a towel to wrap the tank for warmth, and instructions to photograph the thermometer and message you before adjusting any heater. Helpers should also know which behaviours are true alarms in a betta: gasping at the surface, white fuzzy patches, rapid fin loss, or being unable to stay upright. Sharing that sheet through KinsLe's Care Pass gives the neighbour temporary, clear access to the whole routine, so they act on your betta's actual needs instead of guessing kindly at the glass.