Let me start by saying this: Aquarium is not just a book—it's an experience. The moment I opened it, I was struck by the vibrant, dreamlike illustrations that practically leap off the page. The wordless format might seem challenging at first, but trust me, it quickly becomes the book's greatest strength.

I tested this with my niece (who's about the same age as many target readers), and watching her interpret the story in her own way was magical. She pointed excitedly at the girl's makeshift aquariums made from bottles and bowls, giggling at the creative solutions. But here's where it gets really special—when we reached the ending where the girl releases the fish, my niece actually teared up a little before declaring 'That was nice of her.'

The artwork deserves special mention. Alonso uses a limited but impactful color palette—lots of watery blues contrasted with that striking orange fish. It creates this wonderful visual rhythm that carries you through the story. My one small critique? I did find myself wishing for slightly more variety in marine life too (despite loving that little orange protagonist).

Where this book truly shines is in its emotional intelligence. Without a single word, it teaches kids about responsibility, empathy for living creatures, and that sometimes love means letting go. It sparked such interesting conversations with my niece about why we can't keep wild animals as pets.

For parents/educators: This is fantastic for developing visual literacy and storytelling skills. We've 'read' it multiple times now, and each time my niece notices new details in the illustrations.

Final verdict? Five stars for artistic brilliance and emotional depth. Just be prepared—you might find yourself wanting to visit an actual aquarium immediately after reading!