Jan Hamrsky: Minnow mayfly nymph (Ephemeroptera, Baetidae)
Jan Hamrsky: Minnow mayfly nymph (Ephemeroptera, Baetidae)
Jan Hamrsky: Minnow mayfly and Flathead mayfly nymphs (Ephemeroptera, Baetidae and Heptageniidae)
Jan Hamrsky: Minnow mayfly nymph (Baetis rhodani), common name Large Dark Olive.
Jan Hamrsky: Minnow mayfly nymphs (Baetidae)
Jan Hamrsky: Minnow mayfly nymph (Baetidae)
Jan Hamrsky: Minnow mayfly nymph (Ephemeroptera, Baetidae)
Jan Hamrsky: Minnow mayfly nymphs (Ephemeroptera, Baetidae)
Jan Hamrsky: Minnow mayfly nymph (Ephemeroptera, Baetidae)
Jan Hamrsky: Minnow mayfly nymph (Baetidae)
Jan Hamrsky: Minnow mayfly nymph (Baetidae)
Jan Hamrsky: Minnow mayfly nymph (Baetidae)
Jan Hamrsky: Minnow mayfly nymph (Baetidae)
Jan Hamrsky: Minnow mayfly nymph (Baetidae)
Jan Hamrsky: Minnow mayfly nymph (Baetidae)