Valmiki Ramayana Ayodhya Kanda Sarga 33 Shloka 13
Original Shlokaतस्मात्तस्योपघातेन प्रजाः परमपीडिताः। औदकानीव सत्त्वानि ग्रीष्मे सलिलसङ्क्षयात्।।2.33.13।।
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तस्मात् for that reason, तस्य Rama's, उपघातेन by hurting, ग्रीष्मे in summer, सलिलसङ्क्षयात् due to drying up of water, औदकानि aquatic, सत्त्वानीव like creatures, प्रजाः people, परमपीडिताः were highly tormented.
Therefore, people are deeply pained to see Rama afflicted. They look like aquatic creatures in summer when the water dries up.