DESIGN BRIEF: A turtle pond in Kachni cannot survive as a cute animal illustration — the moment the shell reads as cartoon, Rajnagar line discipline collapses into clipart. Central-medallion symmetry solves the layout problem: one circular pond field becomes the bindu, the kurma sits at its centre as cosmic support, and concentric indigo ripple lines carry the water grammar without a single Bharni blue wash. I drew the carapace as plan-view geometry — hexagonal and trapezoidal segments with parallel hatch — because Mithila kurma motifs traditionally flatten the turtle into folk diagram rather than naturalistic side profile; the shell is a map, not a specimen. Fish above the head swim inward with leafy sprigs because paired matsya facing centre is auspicious pond vocabulary borrowed from Kohbar and daily-life panels, anchoring fertility without importing wedding-chamber narrative. Four lotus blooms at the cardinal points lock the medallion to four-direction water symbolism — north-south-east-west blooms keep the circle from floating as arbitrary decoration. Corner vine-and-bud fields outside the pond ring give the cream ground breathing room while rhyming with the lotus-band outer border; terracotta and ochre stay restrained so deep indigo water remains the dominant pigment field.