Young Corydoras Need Fine Food, Often, on the Bottom
A young corydoras catfish grows steadily and forages almost constantly, whiskers sweeping the substrate for tiny morsels. Offer fine sinking food — crushed pellets, small granules, or powdered foods that settle — two or three times daily in modest amounts that the young group clears within the hour. Juveniles in a community tank are easily starved by accident, because mid-water fish take floating food long before anything sinks, so scatter the young corys' food after lights dim or in several spots at once. A growing youngster should look smooth and filled out along the belly, not pinched behind the head. Because young corydoras are social, feed the group together in their usual corner, which encourages shy individuals to eat alongside bolder ones instead of missing meals entirely.
Adults Do Best With One Deliberate Bottom Feeding
An adult corydoras group has finished growing and settles into a calmer pattern: one main feeding a day, usually in the evening when these fish naturally become active. A measured amount of sinking pellets or a shared wafer per small group, placed on open substrate where the adults forage, maintains weight without leaving food to decay overnight. Adults in good condition show a plump, rounded profile and intact barbels, and they spend the day resting in a loose group rather than frantically searching. Mid-water tankmates still steal, so many keepers drop the corys' meal in after the main lights go out, when catfish find food by scent while other fish sleep. If wafers remain untouched by morning, the portion is too large or offered too early, and trimming it protects the water the whole group breathes.
Seniors Need Soft Food Delivered to Their Resting Spot
A senior corydoras moves less, rests longer in one sheltered place, and competes weakly against younger, quicker catfish at a shared wafer. Give older fish smaller, softer sinking foods — pre-soaked pellets that break apart easily — placed directly beside the spot where the senior habitually rests. Feeding after dimming the lights also favours an old cory, whose barbels locate food well in the dark while bolder tankmates are less active. Check that the senior's belly still fills out and that its barbels remain long and unbroken, since worn barbels make finding food harder and can signal substrate that needs cleaning. An older cory that stops joining the group at feeding, breathes rapidly at rest, or loses weight while tankmates thrive should be checked by an aquatic veterinarian rather than simply offered richer food.
Step Portions Down Gradually as Growth Slows
Corydoras portions should ease from the young pattern to the adult one across several weeks as growth visibly slows. Drop one of the daytime fine feedings every week or so while slightly increasing the evening sinking meal, watching that every youngster still rounds out and none is left thin. Later, when adults begin ageing, soften and reposition the food before reducing quantity, because access is usually the senior's real problem. Any sudden change — a new wafer ignored, a whole group off food — deserves a water check first, since bottom dwellers meet deteriorating conditions at the substrate before other fish show anything. Keeping brief notes on portion and timing at each stage makes a later appetite change interpretable instead of a guess.
Make Bottom Feeding a Named Job, Not an Assumption
Corydoras are the fish most often underfed by assumption, with every feeder believing someone else dropped the sinking food. Naming the evening bottom feeding, its portion, and its timing as an explicit shared duty closes that gap. Writing it in KinsLe with Care Teams means the corydoras meal is assigned and marked complete each day, so your catfish group is reliably fed at every life stage rather than remembered on good days.