A Corydoras Plan Starts With the Whole Shoal
A corydoras catfish emergency plan should open with people, then immediately count the fish. List your number, a backup keeper who can visit daily, and an aquatic vet or knowledgeable fish shop. Under the contacts, write how many corydoras share the tank, their species if known, the tank's room and size, filter and heater details, and the usual readings for ammonia, nitrite, nitrate, and pH. A headcount matters because corydoras are almost always kept as a group, and a helper who knows six should be visible will notice far sooner when only five come out to feed.
Soft Substrate and Barbel Health Belong in Writing
In a corydoras plan, the bottom of the tank deserves its own paragraph. These catfish push their whisker-like barbels into sand or smooth gravel all day, searching for food, and rough or dirty substrate wears those barbels down. Note the substrate type, the siphoning routine that keeps it clean, and the instruction never to swap it for sharper gravel during a repair. Describe healthy barbels as full-length and even, and tell the keeper that shortened or reddened barbels, or a fish hovering instead of digging, should trigger a call rather than a wait-and-see weekend.
Assigning Roles When the Water Clouds Over
For corydoras catfish, cloudy water is the scenario to rehearse on paper. The backup keeper's assigned steps are to stop feeding, test ammonia and nitrite first, and phone you with the readings before changing any water. Your role is deciding the size of the change and whether the shop contact should be looped in for spare media. Write down where the test kit, conditioner, buckets, and the group's favourite sinking foods are stored. Also name a second neighbour for access if the main backup is away, since a shoal generating waste in a stalled filter cannot skip a day of checking.
Feeding a Group Without Fouling the Bottom
A corydoras feeding note should be precise about sinking food reaching the floor. State the tablets or granules used, how many, and that they go in after the faster tankmates have eaten, ideally toward lights-out when corydoras grow bolder. Warn that food left uneaten by morning gets siphoned out, not buried by fresh gravel. For a power cut, the plan reads differently: no feeding, lid closed, battery air pump running from the location noted, and extra attention to the bottom layer where oxygen fades first and where every corydoras in the shoal will be sitting it out.
Behaviour Changes That Should Trigger a Call
In a corydoras plan, togetherness is the health signal to teach the helper. A shoal that normally rests in a loose cluster and erupts into joint foraging at food is behaving well; one fish parked alone under a plant, repeated frantic dashes to gulp surface air, or the whole group gone still are the call-now items. Corydoras do take occasional surface breaths, so the plan should distinguish a casual gulp from relentless up-and-down trips. The helper's job is to count the group, note who is missing from it, test the water, and report, not to treat.
Kept in KinsLe, a Pet Passport pairs this corydoras plan with the shoal's history, so whoever steps in can count, compare, and call the right person fast.