Scientific reference sheet in soft 3D feature-animation style, on a plain very dark navy background. Subject: the deep-sea silver hatchetfish (genus Argyropelecus), anatomically accurate. Left: large side view of one hatchetfish: very short, deep, laterally flattened body shaped like a hatchet blade, a thin tail stalk, big upward-pointing tubular eyes on top of the head, upturned mouth, mirror-polished silver sides reflecting light, a sharp keel-like belly edge lined with a double row of small round glowing blue photophores pointing downward, small transparent fins. Right top: the same fish seen from below, a dark silhouette whose blue belly lights glow downward. Right bottom: size comparison: the fish next to a simple ruler showing it is 4 cm long, about the size of a coin. Clean labels-free layout, no text.
