Fall in love of a Fish with a Frog

I always thinking what happened when if a Fish fall in love with a Frog.
Would this relation make an any great impact on future relationship rather than only fun?

आखिर कौन सी अभिव्यक्ति होती है जिसके कारण यह स्तिथि उत्पन होती होगी . क्या यह दृष्टि भ्रम होता है या हम अपने मन को खुद भ्रमित करते है .
या ये किसी दिखावे के लिए होता है .

I thought the thinking of fish about frog is very positive, because Frog can survive in both environments water and as well in the land. Frog must have fun with his behaviors.
And the nature of fish is always finding happiness and fun in their life.
What will be the survival level of this relationship?